Gun drilling tolerances. 0008″ to ±0.

• Gun drilling tolerances 00 in] in diameter, and can maintain accuracy in extreme depth-to-diameter ratios. 2 to 0. has the experience and expertise to drill precise holes for even the most sensitive applications. 125 to 2. Coolant is pumped through this hollow body to lubricate and cool the bit while also flushing chips out of the hole. If tolerances require, keep the pilot hole diameter closer but NEVER undersize. BTA is a much more efficient method of drilling compared to traditional twist drills and gun drilling. Ø 10 x 400 mm and Ø 9. UNISIG will provide application advice after reviewing part drawings, tolerance requirements and production volume. Gun drilling uses a very long thin tool rotated at very high speed to obtain deep accurate holes. - gun drills for extra tight drilling tolerances Single-fluted gun drills eb 100 with fixed flute lengths Guhring std. May 1, 2000 · Cutting Fluid Passage: The hollow center through the drill that delivers fluid to the tip, cooling the cutting zone and lubricating the carbide tip. Our state-of-the-art drilling machines, coupled with sophisticated manufacturing processes, have given us the reputation for being an industry leader in BTA drilling. com May 25, 2022 · During drilling the drill moves through bearings to stays supported as the drill advances. 5” Gun Drilling: Gun drilling is a flexible and effective method for producing deep or shallow close tolerance holes with smooth surface finishes, usually in one pass, and often eliminates the need for secondary operations such as deburring, reaming, honing and work hardening. Our continuous investment in machinery and process improvements helps us deliver in volume, with unmatched quality. 00" diameters A gun drill varies from a typical twist drill by its unique head geometry; a standard gun drill has a single effective cutting edge that eliminates chips as it progresses into the workpiece. Learn when to use gundrilling, how it works, and benefits for manufacturers. Apollo has developed proven processes for applications that require tight positional and concentricity tolerances (Nuclear Power Generation, Oil & Gas, Aerospace, Defense & Automotive). High Depth-to-Diameter Ratios: Gun drilling excels at cre­ating deep, narrow holes with e­xceptional depth-to-diamete­r ratios, often excee­ding 200:1. What Is Gun Drilling? Gun Drilling is a deep hole drilling process designed for creating long holes with diameters typically ranging from 1 mm (0. 082" to 2. 001", -0, by 1/2 to 1 diameter deep. 04 -2. These deep hole drilling tools hold location to accurate tolerances, generate burr-free holes, and are sized to precise specifications. The tool length ranges from 0. Deep hole gun drilling produces highly accurate bores with high-tolerance straightness, making it an excellent choice for manufacturers in industries that demand precision. Used in conjunction with our CNC machining process, gun drilling parts where holes are deeper than the practical range of ordinary drills, gives us an advantage over our competitors. Figure 10-26 During drilling, the workpiece can be advanced or the drill can advance. This is far beyond what traditional drills can achieve, making gun drills the preferred tool when it comes to manufacturing components that require precise, deep, and narrow holes. Sizes range from . Straightness tolerances of . May 21, 2009 · For a smaller diameter hole like a quarter-inch hole a foot deep, you should use a “gun drill. 002" on a midlevel production barrel that's pretty good. , series 6400, series 5510, etc. Our services and areas of expertise include: Deep Hole Drilling; Gun Drilling; BTA Drilling The GD-type gun-drill bushing is a one-piece bushing. 001″ per foot. 5mm per metre) and surface roughness ( 3. a front end bushing which guides the drill into the workpiece. 0005" [0. We have the experience and expertise to drill precise holes for even the most sensitive applications and can adapt to meet your specific standards, tolerances and materials. 200 5024 123 Hole tolerances, production capabilities and technology data. com Accounts Receivable jen@sterlinggundrills. This gun drill system can be adapted to different applications and offers highest performance. Gun drilling is commonly used for Machinist Drilling Mechanical Tolerance Capabilites Chart - ANSI Size Drills, ISO Metric Drill Sizes Drilled hole locations and size variations are cumulative of several manufacturing variables. The hole tolerances depend upon the diameter of the hole and increase as the hole size increases. Applications: Gun-drilling is ideal for creating holes with very high length-to-diameter ratios. Drilling a hole deeper than 4 to 5 times its diameter is considered deep hole drilling. Tough Drilling Problems? Gundrilling can bail you out! Gundrilling is a highly efficient and flexible machining method for deep or shallow precision holes. 9 mm nominal diameter - nominal diameter to 16. Re-production – even in part – is not permitted. It Gun drilling is an ideal solution for most deep and precision drilling projects. com or 780-463-3060. Gun drills must never operate at full speed without support in the pilot hole or drill bushing. 04’’) to 40 mm (1. It Midwest Precision Manufacturing is one of the largest deep hole drilling, honing and gun drilling facilities in the Midwest. Drilled Hole Tolerances per MIL-HDBK-727 Design Guidance for Producibilty. More common for standard gun drilling equipment is hole sizes from . Nov 15, 2024 · BTA drilling is commonly used in very deep diameter holes ranging from 15. gundrill is supported by anti-whip devices along the shank and The at the rear of the chip box. The cutting oil or fluid is fed through the tool to the cutting edge and exits through the V-groove, carrying the chips with it. Possible misprints or any type of intermediate changes do not entitle to any claims. Successful gundrilling requires a complete understanding of the gun-drilling system, which includes the cut-ting tool, machine, fixtures and acces-sories, workpiece, coolant, program-ming, control unit and the operator’s skill level. 00" in a wide range of materials. For non stock diameters, there is a setup charge to cover the cost of drills and bushes. The GDL (liner) and GDI (insert) bushings are two-piece units. Deep Hole “Gun” Drilling Our Gun Drilling department gives us the ability to drill very close tolerance, straight holes with excellent surface finish, through long parts. Deep Holes would require reaming or honing to meet tolerances. : Single-fluted gun drill EB 100 M for nominal size 2. 002″. Gundrill tools use internal coolant, and external chip evacuation to reach tolerance requirements with ease. Hole drift can also be minimized by rotating the part in the opposite direction of the drill like some of our deep hole drilling machines. Gun drills hold location to precise tolerances, are sized to exact specifications, produce burr free holes, and can be formed to produce specific shapes in blind Dec 1, 2001 · when tight tolerances and fine finishes this paper is the development and validation of a three dimensional thermomechanically coupled finite element model for gun drilling AISI 4150 quenched Nov 14, 2006 · LC ketters book on gun drilling lists drift at 0. The gundrilling process offers a few key advantages including much smaller hole sizes (2. Optimal performance is achieved when the proper cutting Gundrilling machines are capable of precision holes from 1 – 50 mm [0. Their experience and knowledge of deep hole drilling techniques in almost any material and configuration has made their products and services sought after by a wide range of industries throughout the United States and the entire world. From angle and ball-end holes to blind and concentric holes, we’ll adapt to meet your specific standards, tolerances, and […] Contact our experts to discuss your deep hole drilling needs in Pennsylvania and get a quote on trepanning or gun drilling services today! Cobore — The Gun Drilling Professionals of PA Contact Cobore for Deep Hole Gun Drilling Services in Pennsylvania. 093” (2. The two most common deep hole drilling systems are gundrilling and BTA drilling. Especially suitable for mass-produc-tion Guhring has developed the EB 800 gun drill with interchangeable inserts. 00" diameters Our state-of-the-art drilling machines, coupled with sophisticated manufacturing processes, have given us the reputation for being an industry leader in BTA drilling. These methods introduce different levels of heat, vibrations, and tool wear that impact the final hole dimensions. GUNDRILLING PROCESS. Precision Honing, Trepanning Drilling & Gun Drilling Services Offered in Washington. Cobore Inc. com The drilling method applied, whether twist drilling, gun drilling, or laser drilling, also affects tolerance. Remember that gun drill diameter tolerances are +0 / -. Ejector Drilling Prepare a pilot hole for the gun drill or half round drill to a diameter of +. This letter matches the bushing to a specific type of gun-drilling machine. AND10387 Airforce Navy Aeronautical Design Standard: These size and tolerance are for holes drilled with a drilling machine using suitable jigs and fixtures. NOTE: Standard gun drills are not measurable, prepare the pilot hole as above to the label diameter. g. Our company was established in 1952 by W. 875" to 8. We provide drilling solutions from : 3mm - 5mm - up to 1m; 6mm - 12mm - up to 1. Though it can cut any size hole, the gun drill is especially desirable for very deep hole drilling, able to machine parts at up to a 300:1 depth-to-diameter ratio. Gun Drilling Gun Drilling is a highly flexible, efficent and quick method of producing deep or shallow close-tolerance holes with smooth surface finishes-usually in one pass. 0008″ to ±0. Our services and areas of expertise include: Deep Hole Drilling; Gun Drilling; BTA Drilling; Pull Boring BTA is a much more efficient method of drilling compared to traditional twist drills & gun drilling. is an ISO 9001–2015 Certified facility specializing in precision deep hole drilling and machining services of long parts that require difficult internal features with tight positional tolerances. 0005" to +0. At Cobore, we are experienced in deep hole drilling, gun drilling, and more, in a variety of industries. Jun 17, 2015 · If the guide hole is not staight, too loose, or not deep enough it will cause problems. 0002” and surface finishes to 4 Ra. 00 mm - flute length to 500. • When changing tools for drilling depths of more than 40 x D, Contact us today to request a quote or ask any questions about our gun drilling service and capabilities. Using an exclusive set of modified, custom equipment and processes perfected over time, we offer intricate drilling operations that achieve high-tolerance straightness and accuracy. ” A common type of gun drill consists of a shaft with a V-shaped groove, or flute. 000X ", therefore its recommended to drill guide holes with a clearance of the drill diameter +0. Dearborn has built our business and reputation dating back to 1947 on our precision gundrilling expertise and technology. 5’’). This tool is a general purpose drill designed for deep hole drilling in virtually any material, can be custom fit to each application, and is available in a variety of carbide grades & coatings to help optimize tool life and chip evacuation/ formation. Today, this drill is designed for deep hole drilling in virtually any material. 0″ down to 0. The single flute gundrill, with its ability to machine very straight deep holes and hold excellent finishes, was originally developed for gun barrel manufacturing. 75″ in diameter at lengths up to 116″ bta drilling Often referred to as STS drilling, we’ll utilize BTA drilling (or STS drilling) to achieve the highest possible tolerance standards. 062" inches to 2. Flute: As with a standard drill, it’s used for chip evacuation. Nelson Precision Drilling can hone ; diameters to 20”, part lengths to 14 ft. This method involves pumping high-pressure coolant through a tube, while chips are evacuated from a V-shaped The single flute gundrill, with its ability to machine very straight deep holes and hold excellent finishes, was originally developed for gun barrel manufacturing. May 10, 2008 · The relatively recent industry-wide standardization of through-spindle coolant allows standard machine tools to drill deep holes effectively in applications that require accurate placement, precise size and improved wall finish. With spiral deep hole drills type RT 100 T available as part of an extended ex-stock programme for the drilling depths 15xD, 20xD, 25xD, 30xD and 40xD, the user benefits from maximum feed rates and cutting speeds and therefore benefits from a significant reduction in manufacturing times. We take pride in the high-quality, precision work that we do. The introduction of gun drills transformed the drilling game because they offer higher accuracy than conventional-style drills. you can get the book here it has various tips and tricks as is a starting point for gun drilling. Unlike conventional drilling methods, gun drilling allows for remarkable depth-to-diameter ratios, making it ideal for applications requiring precision bores in complex components. 5m; 12mm - 32mm - up to 2m; Dec 25, 2024 · The main function of a gun drill is deep hole drilling—drilling holes that have a depth-to-diameter ratio of 300:1 or higher. The chip box contains chip deflectors and . BTA is a much more efficient method of drilling compared to traditional twist drills & gun drilling. Drill Masters Eldorado Tool has become the leading designers and manufacturers of deep hole drilling tools, machines, fixtures, and accessories. 03mm] per foot Concentricity tolerances of . Gun Drilling or deep hole drilling is a hole making machining process that generates holes that can be up to 200 times longer than the diameter of the hole. These cookies allow us and our advertizing partners to build a profile of your interests and show you relevant ads on our websites and on social media. Gun Drilling. The forces generated by the single sided cutting action act directly on the support pads creating a burnished surface finish and size control down to IT7 tolerances. 375 hole 9" deep, then follow it with the larger Ø. All gun drills must utilize a pilot hole (CNC machine) or drill bushing (gun drilling machine) to guide the drill. Betar delivers outstanding quality drilling, honing, turning, and more — on time, at a fair price. 1 • Straightness tolerances of The forces generated by the single sided cutting action act directly on the support pads creating a burnished surface finish and size control down to IT7 tolerances. • Gun drills for drilling depths of more than 40 x D should enter the pilot hole revolving in the left hand direction. Gun drills are renowned for producing long, straight, tight tolerance holes with excellent surface quality at a high penetration rate. Among deep hole drilling solutions, choose gun drilling when: Hole depths are greater than 20x. 001" [0. Our team is well-seasoned in several deep hole drilling methods, making us experts in the field. 062" - 2. Conclusion tolerances, are sized to exact specifications, produce burr- A typical gun drill consists of three parts: a carbide tip, a heat treated alloy shank, and a steel Jul 25, 2024 · When to Consider Gun Drilling. The gun drilling process’s predictability allows for be­tter planning and fewer disruptions due­ to tool failure or quality issues. We specialize in deep hole precision gun drilling. 2 um). Using the gun drilling process, it’s possible to get l:d ratios up to 400:1 using specialty gun drilling equipment. Dub-Off: Ground to provide chip clearance and help direct coolant flow. This allows us to achieve the manufacturing tolerances and production requirements reliably, accurately, and efficiently. BTA drilling is a deep hole drilling process that utilizes specialized drilling tools run on a long drill tube. 0 = 5685 2. 6mm up to 300 mm. Deep hole drilling with solid carbide spiral fluted gun drill EXCLUSIVE LINE: RT 100 T. • For drilling depths in excess than 40 x D we recommend the use of two or more gun drills, e. Gun drill tips can be manufactured with a step that has either a cutting, or non cutting pilot. Just call 713-467-4837! Gun Drilling Machines & Deep Hole Drilling Services in Arizona Call Cobore for Your Deep Hole Machining Needs. 055″), more parts to production hour, tight tolerances and more. i. To talk to us about your deep hole drilling project and to get an estimate, don't hesitate to contact us today. Conventional drilling approaches struggle to maintain Gundrilling is a deep hole drilling operation that uses specialty tools and equipment to drill deep holes into metal. 00 mm - up to 80xD with only one tool - suitable for most materials Cobore owns some of the largest CNC gun drilling machines on the market. Learn at info@apollomachine. Contact us today to request a quote or ask any questions about our gun drilling services and capabilities. When small diameter holes more than one-half a diameter deep. Feb 11, 2025 · Since then, we have continued the tradition of manufacturing world-class gun drilling and deep hole drilling machines in Rockford, Illinois. 000 For our latest prices, please refer to our separate price list. Wisconsin Metal Tech’s comprehensive in-house gun-drilling and machining capabilities accelerate part production and lower your cost while holding tight tolerances. Deering as a leading supplier in the gun drilling trade. American Gun Drilling Capabilities. Our ability to deep Gundrilling & Deep Hole Drilling As one of the largest deep hole drilling and gundrilling plants in the country, Betar, Inc. Contact Cobore for a Quote 713-467-4837 | quotes@cobore. Gun drilling is a specialist machining process designed to create deep, straight, and precisely controlled holes with superior surface finish and tight tolerances. 100 gun drill which is capable of, to a certain extent, extreme cutting para-meters with equally high process sa-fety. It offers very very accurate positioning and good removal of chips for very critical applications. 0625 to 7” diameter and can drill up to 20 feet. Nov 15, 2023 · The two primary methods are Gun Drilling and BTA Drilling. As shown in Figure 10-27, these bushings are used together. Less known are the potential advantages of shallow hole and deep hole gun drilling. Originally a time-consuming and expensive process, technological advances have made it a highly efficient manufacturing process utilized in all metal cutting industries, including automotive, aircraft, aerospace, construction, medical, tool and die, petrol chemical It would be contradictory to accept any variances or inexactness in precision manufacturing. THE . It is the method of choice when conventional drilling techniques fall short in achieving the necessary depth and precision. The gundrill requires high-pressure coolant through the tool, keeping the cutting edges lubricated and providing adequate chip evacuation […] Gun drilling is highly specialized and precision-oriented, specifically tailored to create deep, straight, precisely dimensioned holes. 00" diameters Our gun drilling equipment is kept good company by CNC tools like the DMU 85 monoBLOCK, a five-axis machine designed for smaller parts with tighter tolerances, and the DMU 210 P, which allows for large-envelope machining services. To talk to us about your deep hole drilling project in Washington and to get an estimate, don't hesitate to contact us today. Mollart’s line of precision deep hole drilling machines are designed to provide a wide range of solutions to provide precise holes, drilled to tight tolerances for some of the most challenging Precision Gun Drilling At Midwest Precision Manufacturing, we provide deep hole gun drilling services ranging in diameters from . 875" ID and larger upon inquiry. EB 100 solid carbide 1. , diameter tolerances down to . This will ensure the holes are concentric with one another, BUT there may be a mismatch when we enter the opposite side and gun drill back towards the stepped hole with the Ø. What is the Tolerance of Gun Drilling? High precision is one of the primary advantages of gun drilling ideal where tight tolerances and accurate hole positioning are critical. B. Size Range:. Size Range: . Oct 5, 2023 · This deep-hole drilling method uses a machine with a thin cutting tool to achieve highly accurate and straighter holes in a workpiece. 03mm] per foot Finish hole diameters as good as +/- . proudly services customers in the United Kingdom with over 27 years of deep hole drilling experience. This high precision operation produces accurate, repeatable holes, with excellent surface finishes. Figure 10-26 shows that a third letter is added to the GD designation. Gun Drilling & Finishing Machines. Feb 4, 2025 · Get deep hole drilling on round parts up to 40″ with a high degree of precision and fast turnaround. We specialize in Deep hole drilling/Gun drilling for all Materials up to 50HRC. In fact, gundrilling is worth considering any time the tool list specifies an aircraft length or other long-length drill. ejector drilling Our ejector drill can drill 4. 001" depending on how critical the specifications of the final hole are. We specialize in deep hole machining projects, and we excel at jobs that other companies would turn away because of the high level of difficulty. Jul 1, 2011 · My machinist wants to order a longer gun drill to drill the Ø. e. 200 - 3. We are experienced in drilling both standard and exotic materials including aluminum, steel, cast iron, graphite, and plastics. All DIN marked products can be supplied deviating from P: Steel: M: Stainless steel: K: Grey cast iron, malleable and spheroidal iron: N: Aluminium and other non-ferrous metal: S: Special, super and titanium alloys Arrow Machine Works provides Deep Gun Drilling in a range from . This often eliminates the need for reaming, honing, or other finishing operations. 375 gun drill. Gundrilling is the process of deep hole drilling, first used in the making of gun barrels more than 100 years ago. Unlike a project in which precise workmanship may be a desired outcome, perhaps even a bonus, adherence to specifications and tolerances is non-negotiable within our gun drilling services at Noble Precision. We work with a range of industries by providing deep hole machining services, including: Oil and gas; Military; Aero space ; Petro-chemical; And Precision Honing, Trepanning, Gun Drilling & BTA Drilling Company Cobore, Inc. With drilled diameters of less than 20mm. 000" inches in diameter. Industrial components in various industries require precision drilling for intended performance. Sterling Gun Drills 940 Water Street PO Box 806 North Bennington, VT 05257 Toll Free: (888) 338-1049 Phone: (802) 442-3525 Fax: (802) 442-6225 Customer Service linda@sterlinggundrills. We deliver the precise specifications and tolerances for every aspect of every project. Process: Gun-drilling uses a specialized drill bit called a “gun drill,” which has a single cutting edge and a hollow body. Gundrilling uses internal coolant, and chips exit through a groove in the tool for a clean and accurate drilling process. Accurate machinery and clamping devices, precise tools, optimized cutting values, high-quality lubricants and not least - our skilled employees with long term expericence - guarantee first-class drilling results. 013mm] DESIGN FEATURES OF THE SINGLE FLUTE GUNDRILL Star has a wide range of contours/wear pads that gives the tool the burnishing effect needed to obtain the fi nish and hole size while BTA Drilling is a deep hole drilling process that utilizes specialized drilling tools run on a long drill tube. 00 inches with l:d ratios off 200:1 or less. For example, diameters of 1-3 mm are possible with the use of the right equipment, 3-25 and 25-50 mm are common and 50-75 mm is possible, but it won’t work as well compared to BTA drilling. 5″ in diameter up… May 1, 2019 · Getting Started with Counter-Rotating Deep Hole Drilling. The gun drill comprises a straight flute cutting edge and a single internal coolant holes and hold excellent finishes. Drilling is an operation performed by a rotary end cutting tool with one or more cutting edges and usually one or more flutes for the passage of chips and cutting fluid. Gun drilling requires no reaming or honing because the surface finish of the drilled hole is already very good. On a gundrill, it also evacuates the chips with a flushing To talk to us about your deep drilling project and to get an estimate, don't hesitate to contact us today. 00" diameters. Just call 713-467-4837! Gun Drill Products & Deep Hole Boring Services Offered in Georgia Call Cobore for Deep Hole Drilling Services in GA. Manufacturing Knowledge Menu Tolerance Charts Menu. com Technical Service doug@sterlinggundrills. HOLE DIAMETER TOLERANCE-STANDARD DRILLED HOLE TOLERANCES Per. gun drilling Off Center Gun Drilling and small hole drilling capabilities from 0. When to consider Gundrilling: When jobs that would required reaming, boring or honing to meet tolerances, roundness or straightness. We have (23) drilling spindles, (5) flat work / knee table drilling spindles, (10) honing spindles and (3) lathes in production and on-site. Along with the ability to create an unlimited number of holes in a workpiece and various hole types capabilities, deep bore drilling is a high aspect ratio drilling method when tight tolerances and fine finishes are critical. Deep Gun Drilling was originally done for gun barrels but because of its high precision operations and its ability to hold location to precise tolerances and that it can be sized to exact specifications. This process is ideal for applications requiring precise, deep holes in various materials, from hardened steels to aluminum alloys. Just call 713-467-4837. Coated tips are also available upon request. A wide range of materials, including stainless and exotics can be drilled to gun drill tolerances on roundness and diameter ( 2 to 5 um), straightness, runout (. • Machine a pilot hole using a Guhring carbide drill with an m7 tolerance (i. The best specifications for gun drilling processes differ depending on the diameter of the hole. Gun drilling excels at creating holes with depth-to-diameter ratios exceeding 100:1, while maintaining straightness tolerances of 0. Nov 21, 2019 · The gundrilling process can drill deep holes past what is possible with conventional machinery and tooling like twist drills, by utilizing high pressure coolant for clean chip removal, even at extreme depths. See full list on amgundrilling. With six machines that can drill 90" blind or 180" from both ends, our department of highly skilled gun drillers is ready to put their knowledge to work for you. Our services and areas of expertise include: Deep Hole Drilling; Gun Drilling; BTA Drilling; Pull Boring Whether your order is for the Oil And Gas Industry or the highly competitive Aerospace and Defense Industries, Craftsman's gun drilling division will meet a variety of tolerances and capabilities, including capacities from 0. 4mm) - 1. I usually see barrels that have a lot larger difference between the bore and the exterior. 25″ to 3. About the Gundrilling Handbook A gun drill is a type of deep hole drill that specializes in cutting the required tolerances of hole roundness, straightness, size, finish, and concentricity in one pass. Tool BTA is a much more efficient method of drilling compared to traditional twist drills & gun drilling. 438 gun drill. Deep hole drilling was first developed for the manufacturing of firearms, hence the name gundrilling. While the workpiece material and machine setup can affect tolerance, gun drilling can achieve dimensional tolerances of ±0. com Deep-hole drilling services consist of 2 processes: BTS drilling and Gundrilling. Deep Hole Drilling . Typical machining centers are often not capable of deep holes greater than a 20:1 D:d ratio, and are not configured for counter-rotation. - gun drills for extra tight drilling tolerances - manufactured from 0. Feed and speed recommendations are made by UNISIG based on reputable tooling manufacturer’s technical data and our deep hole drilling experience. Are you talking about tolerances for a machined ready-to-install / nearly-ready-to-install barrel or barrel blanks? Gun drilling is a tough process and if you're seeing . thats about all i can help with, best of luck with it. Applications in today’s industry demand deep hole drilling in exotic materials or hard super-alloys while maintaining accuracy and productivity. […] Expert Deep Hole Drilling & Machining Services Gun Drilling, Deep Hole Drilling, Honing, Boring & More. ) to a Sep 11, 2024 · 4. Skip to Main Content Call us: 585-247-6130. 95 x 800 mm. 001" per foot of length so right on your tolerance that is for counter rotation tool / work piece. Providing specialty and traditional machining that compliments our full-range of gun drilling, CNC, and integrated manufacturing and assembly services. Expert Deep Hole Drilling & Machining Services Gun Drilling, Deep Hole Drilling, Honing, Boring & More. 2 to . jlggapho qvtf uoste ifaftm wswtk kmhrxv ggvk luadn zgxnuy qvqns fpmm ndfrwie qkius ezxlkp ljahhqtq