Dovetail groove dimensions. The samples were divided in four groups of 20. Dovetail groove dimensions

 
 The samples were divided in four groups of 20Dovetail groove dimensions Timelord (Mechanical) 15 Dec 08 16:29

Keep adjusting until the guide is right in line with the groove, then clamp down. Parker O-Ring Vacuum Sealing Guide is a comprehensive pdf document that provides technical information and best practices for designing and selecting o-ring seals for vacuum applications. They also have different groove angles as shown below. D. Higbee Division: Syracuse, NY. 010 if you want . Wood joints are typically used in wood members with widths between . 00. However, installing an O-ring into these grooves can be tricky without proper technique. EPDM O-Rings. Length 595 mm. Putting the angled face to the outside renders it useless for retaining the o-ring because the o-rings is pulled towards the. Cut the 1/4" plywood bottom to size. The dovetail grooving inserts are intended to machine O-ring dovetail grooves with 66-degree undercut angles. 4. 1a Mounting with rail (dovetail connector rail) Mill groove into for track into front edge of shelf, 10. O-Ring Size Charts O-ring, x-ring and square. 5M-1994)dimensioning method (again, linear, not. 005” thickness by 0. The dovetail key is a device that spans a natural wood defect or a man-made seam to mechanically lock two pieces together. Axial Inches % Inches % No Backup Rings One Backup Ring Two Backup Radial Axial Rings3/4" dia. Many fluids can cause an O-ring material to swell 10 or 20%. See Dovetail Groove Cutters. b Groove outside diameter. Index Table of Contents. To help you maximize o-ring performance, this dovetail o-ring groove design guide provides default recommendations to find the perfect o-ring dimensions. Dovetail dimensions are measured at the upper side, which is wider, in our case 16. The calculator takes all relevant parameters into account like: O-Ring squeeze. The front ring is lower than the rear ring. Calculate the O-Ring groove dimensions. For rotary O-rings: a compression ratio of 0-10%. 000 +. Dovetail Groove Design Charts Cross Sectional Dimensions AS568A Series O-Ring Cross Section Gland Width Squeeze Gland Depth Gland Corner Radii Actual Tol +/- (G) % (L). Weaver rails feature . Mark the tail length. The O-ring must have room to expand laterally in the groove due to axial compression. Create your own clamp tracks anywhere you can route. AlTiN coating option for added lubricity and increased wear resistance in difficult-to-machine materials. O-ring groove design is a key consideration in the o-ring selection process. Static / Dynamic Gland - Male Static / Dynamic Gland - Female X = 32 rms when sealing liquids. Rotate the dial face for viewing at multiple angles. Gland width is to sharp edge of groove. Surface Finish Static Grooves Straight-sided grooves are best to pre-vent extrusion or nibbling. CNC, Swiss, Conventional and Round toolholders of various sizes and orientations available. Parker O-Ring Vacuum Sealing Guide is a comprehensive pdf document that provides technical information and best practices for designing and selecting o-ring seals for vacuum applications. 1-30 143 All the information in this documentation has been compiled with the greatest of care. Tongue and groove joints allow two flat pieces to be joined strongly together to make a single flat surface. ( 3/8" has a 45 degree mill cut versus the 11mm with a smaller top and 60 degree angle mill cut. Deduct this from the 3″ and you end up with 1 7/8″ so the dovetail width will be 15/16″. In addition, the flute runs through the neck, further reducing the tool’s core diameter. Use very small (1/16”) dots of glue every 3-4” along the groove. 5 mm, 18 mm and 19 mm. The result will be that the ring will extrude itself under that temperature cycle. O-Ring Groove Dimensions for Vertical Position Pressure. Make every inch of your workshop more functional. With any standard 1/2” 14-degree dovetail router bit, you can create your own clamp tracks anywhere you can route a dovetail groove. EZ-Lok Seals. 3/8" dovetail grooves work best with very small and light scopes, which more easily follow the gun back under recoil. The 11 mm dovetail has a 60-degree angle, while the 3/8” dovetail has a 45-degree angle. Lastly, the fourth table is. 5mm wide at the deepest part of the groove. Below are our sight offerings for 1911 pistols with Novak® LoMount dovetail cuts: Please confirm slide dovetail cuts and dimensions with your firearm’s manufacturer, or a local gunsmith prior to purchase (below are the Novak® LoMount dimensions). . A micron is. Harvey Tool's fully stocked selection of O-Ring Slotting End Mills are optimized for machining O-Ring grooves, and feature a stub flute length for improved strength. When joined, they interlock seamlessly, ensuring a flat and continuous surface. 125, and . These tips produce an angled cut of chamfered edge on a workpiece. Insuffi cient radius will potentially cause damage to the O-ring during installation, while excessive radius may contribute to extrusion. However, designers must be careful in selecting the dovetail groove dimensions as a large inclination angle can limit the space inside the groove for the O-ring to expand into. 5 mm). To measure the width between two dovetail grooves, one millimeter pins were inserted into the dovetails on either side and a dial caliper measured the distance between the sides of the two pins. 2 W Cross Section Nominal Actual L Gland Depth Squeeze Actual % G Groove Width R Groove Liquids Radius Vacuum and Gases 004 through 050 1/16. 7. 004 for sizes 2-325 through 2-460 Design Guide 5-2a: Gland Dimensions for Industrial Recipro-cating O-Ring SealsSpecialty Profiles. e. Dovetail cutters are specialized tools for cutting a dovetail groove into a workpiece, for fitting or joining parts. 1 at $250 and 2 at $180 each. Before you can install the sight in a sight cut & dovetail, you generally have to fit the sight to the sight cut & dovetail. 9mm - one dash ABOVE horizontal bar. g Groove style A – Groove providing. e. And with just a few simple tips, you’ll be routing perfect joints in no time. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent. Can anyone tell me the nominal dimensions of a rear Novak dovetail groove for a 1911? I have a pistol with a "novak style" (i. of Flutes Price AlTiN; HDG1/16. The groove dimensions are incorporated in the standard dimensions. $ 27. Use a bevel edge chisel remove the waste by paring down just over half the thickness of the timber. Starting with a relief groove improves the cut quality of dovetail grooves, and prolongs the lifespan of your MATCHFIT Dovetail Router Bit. 5 degrees is 1/6, and 7. It is a type of groove designed to provide superior sealing performance in applications with significant thermal or pressure cycling. 070 0. Thanks for that. This groove can either be extruded, or machined using a special dovetail cutter which is available from Spira. 9. 299 0. The samples were divided in four groups of 20. 1-30). It was found that steeper angle between mortise-tenon contact areas. You can always vary the sizing on boxes where the overall height of the box is not intended to fit. e. Gland Design Dovetail Grooves Gland Design for a Static Application; for O-rings in Dovetail Grooves, INCHES. TheA half-lap dovetail joint combines a lap joint's overlapping design with the angled interlocking profiles of a dovetail. 490" Thru 44mm 30MM X-High . Machine circular grooves onto the end of a workpiece. Select the ORDER CODE in the table below that represents your selection of shank dimensions. It’s like an infinite supply of T-track without the cost of T-track. 003. btrueblood (Mechanical) 13 Jun 11 13:35. Please contact Greene Tweed engineering for help or advice if required as some applications are difficult to optimize both at ambient and operating temperatures. This Global O-Ring and Seal Size Reference Guide covers the Aerospace Standard AS568 O-Ring Sizes published by the Society of Automotive Engineers (S. 030, . 5” (3. 005 9. - Table Saw - Router table - MATCHFIT Dovetail Router bit, or comparable 14º, 1/2” diameter dovetail router bit - 45 degree V-groove router bitThis article is from Issue 22 of Woodcraft Magazine. The most important variable for installing an O-ring into a dovetail gland is making sure the seal is sized properly. 24° Per Side, 48° Included. 00. Dovetail Insert Styles. 9. The correct O-ring groove dimensions and shape will ensure complete compression between the track and the mating surfaces. Contact Us For Assistance Or Samples Click Here and contact us today to receive a quote or if you have any questions regarding sizing. By simply entering installation specifications for an application, it recommends O-Ring sizes, housing layout and. Semi-dynamic sealing applications that utilize a dovetail groove configuration; Availability. 003” extension. Dovetail Half - Bay SealAllows for a 360-degree range of motion with dovetail grooves in a grid layout. Specialty Metals Compliant (252. 010 0. Situations causing overfill may be thermal expansion resulting from high heat, or O-ring swell due to the seal material absorbing some of the fluid. • Encourages the shielding perfor-mance illustrated in the Shielding Dovetail seal Also here there is a metal to metal contact as long as the con-struction will not deform under system pressure. Our O-Ring Dovetail. Try to keep the depth of the dovetail groove between 1/3 and 1/2 the thickness of the part. These stock cutters conform to the standards suggested by the Seal Division of Parker Hannifin Corp. -built equipment, Parker AS568 Kit #1 contains 30 of the most commonly-used o-ring sizes for general applications. Ph: 859-269-2351 Fax: 859-335-5128. SAE AS568B: American standard for O-rings. The difference is enough that old foresights are too narrow at the bottom to fit onto new. 150 in. Anschutz, for example, refers to their dovetail as 11 mm. Solid Carbide Dovetail Cutters 1/16 3/32 1/8 3/16 1/4 3/8 , O-Ring Grooves . What size are standard dovetails? Dovetails come in several different types and sizes depending on manufacturer, but the most common are the 11 mm and 3⁄8 inch (9. The high component value and complexity make process security essential. Note that the dovetail groove becomes rectangular when the base angle a = 90°. After you’ve made your route, you can simply snap the KLICK woodworking connector into the custom dovetail groove. For example, if the gable of a chest of drawers is 3/4″ thick, machine the dovetail groove between 1/4″ and 3/8″ deep. Use face grooving tools with precision coolant supply even if the maximum coolant pressure in your machine is low (7‒10 bar (102‒145 psi)). should be a normal 3/8" / 9. 2. Dynamic applications: stretch a piston seal by up to 5% and compress a rod seal by up to 3%. Dovetail O-ring groove. 5, 14, 14. Select a size to buy standard and custom o-rings from the world's largest inventory network or custom orders can be made within a few weeks, typically without tooling fees. Groove Diameter ±. BS1806 British Standard O-ring sizes (imperial) International O-ring Standard Sizes PAGE 2 Millimeters Inches Internal Internal Cross Internal Internal Cross Diameter Diameter Section Diameter Diameter Section (mm) Tolerance +/- (mm) (inches) Tolerance +/- (inches) 7. Surface Finish Static Grooves Straight-sided grooves are best to prevent extrusion or nibbling. Chemraz® O-Rings FFKM. Boss seal The groove dimensions are incorporated in the standard dimen-sions. The online O-Ring Calculator offers engineers and professionals a quick and easy way to calculate O-Ring dimensions and the appropriate housing layout in accordance with the international O-Ring standard ISO 3601. • The first is overfill from high volume caused by a very small gland. PDF Instructions 2. gnatshooter. 42, lists SAE recommended dimensions for dovetail glands by ascending AS-568* numbers. Face seal o-rings pop out easily, yeah. Test Indicator Mini Indicol Holder: Use with Dovetail & 5/32 in Indicators. Designing Axial Static O-ring Grooves to "Industry Standards" | GrabCADKLICK – Dovetail Connector. 500". Using the table above, determine the maximum recommended gland depth for your application. 5mm), you can use this lightweight aluminum adapter to attach your Weaver and Picatinny rings or mount to your smaller 11mm and 3/8" dovetails. E. 0634 ; 65°/. 000 Groove Width G Gland Depth H External Pressure Diameter B Internal Pressure Diameter A AS-568* NumberVolume fill is the O-ring volume divided by the gland volume. 3 1/4 ". SPECIALS IN 4-6 WORKING DAYS. All the tails are cut into one piece of wood, called here the tail piece. Use very small (1/16”) dots of glue every 3-4” along the groove. O-Ring Metric Groove Design [PDF] Seal & Design Company Info. b Groove outside diameter. 1502 CNC Profile. 004Thinbit, manufactured by Kaiser Tool, has expanded its Groove ’N Turn line of dovetail grooving inserts, which are used to machine O-ring dovetail grooves with 66-degree undercut angles. Locations. Worldwide unique online calculation tool taking into consideration of the thermal expansion of the construction parts and the O-Ring. Changes can then be made interactively to evaluate the effect of these changes on the groove/o-ring fit. Logged. Markez® O-Rings FFKM. Free groove volume. They have highly sensitive, wear-resistant jeweled bearings for a long service life. Surely 3/8" falls between 9 and 11mm anyway ? It is my understanding that the main difference between 3/8 and 11mm is not the width of the dovetail, but rather the angle of the groove. To help you maximize o-ring performance, this dovetail o-ring groove design guide provides default recommendations to find the perfect o-ring dimensions. The Trap-Seal is a trapezoidal-shaped O-ring that is designed to stay securely lodged under the groove lip of the O-ring face seal (ORFS) fitting. 9. by Apollo » Sat Sep 16, 2017 12:12 am. 005 +. A dovetail that will "hold" the O-ring at room temp. 005 +. Most of the dimensions stated in this catalogue are nor-mally (but not as a matter of course) available ex stock. RWP-038SS. PTFE o’rings in radially loaded closed grooves are generally not recommended, however if this is unavoidable, PTFE o’rings can be heated to around 100°C to. 057 To. The way how to connect it to your ASIAIR PRO: Connection tips: 1. 005-. 68 inches; 1. For a bore (piston) seal:O-Ring Min Groove Diameter. Gland Width (G) Gland Depth (L) Radius (R) Radius (R1) Full Dovetail Groove Detail Half Dovetail Groove Detail For dovetail grooves, match the centerline of the groove with the centerline of the O-ring. male. Dovetail The O-ring is also axially squeezed in a dovetail groove. The Dovetail Bit's built-in roundovers cut clean dovetail grooves in a single pass. 11mm calculates to . 1-30). Something made in 2001. S. Mossberg’s tip-off concept spawned some new ideas, such as this Bushnell scope with a dovetail rail that mirrors a . Divide line 6 by line 9 11. . Thus 9. Caption of Asset 4434331, MAM Studio Assets - Accepted. Asking a dovetail cutter to plow through a hard slide cutting on a full 180-degree path is begging for an overheated and worn (or broken) cutter, a work-hardened slide and poor cut finish. check out this article to learn about our best tips for the successful design. Appendix XI. Blind Miter Dovetail Wood Joints have 2 to 4 joints and full joint depths. 057 To. 002 for sizes 2-006 through 2-324 - . Metric o-ring groove dimensions are listed for the most common metric cross sections with and without backup rings. Boss Seal. Cut the grooves in the other three pieces of stock in precisely the same manner. In general. Create dovetail grooves that allow O-rings to flex without falling out of place. 1/2. Because the joints all go through the full thickness of their respective mating parts a 10 X 18 inch box will require two 10 inch parts and two 18 inch parts…easy-peasy. Whether for a telescope mounting plate, a dovetail shoe for a finder bracket or a wood joint. Use the Dovetail Clamps to secure material for cutting or assembly ; Specifications. Hold the piece in your dominant hand and use your opposite hand to pin it firmly against the table's fence. 0. KAISER TOOL COMPANY, INC. Remove the original dovetail plate of ASIAIR PRO. For U-shaped groove, dimensions acc. O-ring in the smallest possible groove (i. Whether you are a first-time dovetailer or an experienced woodworker who doesn’t cut dovetails often, these little tools come in. Compatible with standard ½” 14-degree dovetail router bit profile. BS4518 is a metric standard issued by the British Standards Institution that defines dimensions for O-rings and their housings for rod, piston, face, and trapped grooves. Surface Finish Static Grooves Straight-sided grooves are best to pre- vent extrusion or nibbling. 0000000. 4 μm Ra) 8,4 7,25 6,25 6,80 1,5 0,5. 080, . e Minimum full thread depth. Data sheet. 013 to. 275 of Y14. Rounded-Edge Square. Half Dovetail Groove. Toolpath 2. Do not need a base as they attach directly into grooves in the receiver. After selecting a material that fits your sealing application, you can continue by having the Size Selector calculate the O-ring dimensions and tolerances, considering even thermal expansion and volume swelling of the sealing element. Angles range from 7° to 14°. Direction (optional) Select a plane, a planar face, or a straight edge to define the direction of the lip and groove. Single flute carbide O-Ring form tools for lathe applications. 43 - I. #3. O-ring in the smallest possible groove (i. Available in 1/2", 1/4", 12mm, and 8mm shank sizes. 5mm - horizontal bar. The three parts of SAE J1453 cover material, dimensional, and performance requirements of steel O-ring face seal (ORFS) connectors for tubing and the O-ring face seal interface and nut portion of hose stem assemblies for nominal tube diameters of. 011 0. 46 - Thread Relief Tools. Cut the grooves in the other three pieces of stock in precisely the same manner. The specified values cover the majority of sealing applications and are to be regarded as recommendations only. Narrower groove for sealing vacuum or gas. of sizes from 5” I. Dovetail connector rail. Dovetail Seal. Parker Hannifin O-Ring & Engineered Seals 2360 Palumbo Drive Lexington, KY 40509 Ph: 859-269-2351Installers can drill, tap, or machine the sets to accommodate specific mounting requirements. Dovetail seal Also here there is a metal to metal con-tact as long as the construction will not deform under system pressure. The second toolpath is designed for a 73° dovetail router bit. Parker O-Ring Handbook 5700 Handbook Introduction 1-3 Seals Build With The Best!The O-ring inner diameter (ID) should also stretch approximately 5% over your groove or gland. The problem is it has the thin sheet metal base so I don't have the same warn and fuzzy I would get from a steel base. Insuffi cient radius will potentially cause damage to the O-ring during installation, while excessive radius may contribute to extrusion. EricHill, I regularly use half dovetail o-ring grooves. f Groove style A – Groove providing improved retention of O-ring – Option 1. Undercut very slightly to allow the shoulders to pull up nicely. This document. Unlike a line marked by even a sharp pencil, a line marked by a knife is exact. Weaver RailsDeveloped by William Ralph Weaver, the Weaver rail was created in an attempt to standardize scope mounts. Tariff Code. Groove widths . RWP-038SS, Stainless Steel, . 2. Using the table above, determine the maximum recommended gland depth for your application. The third table is for dynamic industrial reciprocating applications. (fig. The geometry of the omega replica watches groove is important – the dimensions need to be specific because the o-ring is located in the groove. To make this joint, you'll rout the dovetail slot first, then cut and size the dovetail to fit. (a) The rubber compound must be added when ordering by the 5-size number (i. From this data, B-Square compiled a list of scope groove dimensions for many models of air rifles. D40xa60°xd20 Dovetail Groove Milling Cutter, 6 Flute High Cutting. 42 - Quick Change Face Grooving Tools. Groove dimensions are shown in the tables beginning on page 138. 3/8" dovetail rails are a common, standardized style within the rimfire industry and are inexpensive to machine into the firearm's frame. 10 1. Explore some of the most common sealing materials we offer here. 5mm above bottom of sight dovetail. 101. Available in 1/2", 1/4", 12mm, and 8mm shank sizes. This self-aligning feature makes the joint particularly effective for creating wide panels. Diamond Seals. 000-. D. While the outer appearance mirrors a simple miter joint, the interior hides the intricate dovetailing that offers superior strength. 139 inch (3,53 mm) and bigger. Features: O-Ring Dovetail Groovers Solid micrograin carbide ; For turning 24° o-ring dovetails; All shanks have two lockdown flats so you can flip the tool and cut both sides of the groove with the same tool. 1 degrees is 1/8. These dimensions were determined in consideration of ease of processing when fabricating dovetail structures by. to 500” I. They also rank among the easiest joints to make provided you have the right tools. E. Ultra Quick-Shield. • In milling the groove, a regular o-ring groove using the dimensions of “W” and “L” must be made first, then finished up with a dovetail cutter. 75” dovetail fixture specifically designed to be mounted to the Haas TR-100 and the Haas TRT-100 indexer. 46 % 6. The variable names PISTON-TYPE SEAL FACE-TYPE. Noted for its resistance to being pulled apart, also known as tensile strength, the dovetail joint is commonly used to join the sides of a drawer to. Sight dovetail requirements: Front sight: . Going to go into the right side of the jig, inside out. A dovetail O-ring groove is a type of O-ring groove design that incorporates a dovetail-shaped cross-section. 101 0. These groove dimensions are for compounds that free swell less than 15%. If you are looking for a comprehensive guide on O-Ring design, selection, and application, you should download the Parker O-Ring Handbook (ORD 5700) pdf. Press-In-Place Seals. Country of Origin. 063” to 1”. (fig. The connectors are called tails and pins. Lip body. Select a standard, groove type, and available groove size from the lists on the top left of the tab. Because two dovetail routes must be made, the KLICK is commonly used where most pre. c Sharp edge or burr not allowed; break corner 0,15 max. com 3/4″ Diameter Dovetail Cutter 60 Degree High Speed Steel (2906) Features : High speed steel cutter. 5” cube. , Japanese JIS, British BS and Common Metric o-ring size charts. 053 to. The front ring is lower than the rear ring. Five degree sloping sides are easier to machine and are suitable for lower pressures. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent. 000 Groove Width G Gland Depth H External Pressure Diameter B Internal Pressure Diameter A AS. 005 0. I'd investigate using some dovetail scope mount STOPS. +/- dimensions look simple, but especially when applied to a tapered feature like a dovetail they could potentially allow a surprising amount of variation you're not expecting. Sizes and angles of sights can drive you nuts, because sight manufacturers don't like to give the actual dimensions of the sights they sell. 5 mm, 14. 78 mm). S. B = Groove Width C = Diametrical Clearance D = Groove Depth Seal Types & Gland Design Illustration 4. This groove can either be extruded, or machined using a special dovetail cutter which is available from Spira. The top should measure just under 0. While Dove Tail O-ring grooves are effective at keeping an O-ring in place, they are expensive to manufacture and should only be used if absolutely necessary. When compared to tools without drop-hole allowance, tools with drop-hole allowance have a much larger neck diameter-to-cutter diameter ratio. Gland Typical feature details and tolerances for o-ring grooves to let the o-ring seal properly in my experience are: - surface finish on the "bottom" of the groove (and on the mating part's "counterface") - the depth of the groove to compress the o-ring some minimum % of cross section diameter. Rear sight: . Dovetail and Half-Dovetail Grooves. » FilterSeals® Innovative FilterSeals® are custom designed as a combination elastomer and fabric device that operates as both a seal and a filter. For a rod (shaft) seal:O-Ring Max Groove Diameter = Min Shaft Diameter + (2 x Recommended Gland Depth) b. They are used to cut the male and female parts of dovetail joints for industrial slides, as well as for cutting bevels and undercuts, and for deburring parts. Design Chart 4-2 and its accompanying Design Table 4-2 (available by clicking on the chart image at the bottom of the page) give one set of dimensions for static O-ring seals when the configuration is similar to a piston or rod application with no motion involved. Select the type of O-ring groove - piston, rod, face seal or trapped seal. c Sharp edge or burr not allowed; break corner 0,15 max. Simultaneous O-Ring Groove Compliant Dovetail Grooving and R Chamfering, Powdered High-Speed Steel, TIALN Coating. Vixen developed the dovetail plate for mounting a telescope to a mount. d w Quad-Ring®/X-Ring dimensions Note: (**) In case of exceptional bending of the rod or shaft, the diameter of the bottom of the groove can be adjusted both in case of vacuum and high pressure. The retention feature makes having an upside-down or vertical face seal groove much. Since the glue may degrade the shielding, use as little as possible to hold the. 5 mm). Dovetail Flange O-Ring Groove Design Chart. 065. View basic o-ring design guides for grooves, glands, depth, width, clearance, stretch, squeeze and more from Marco Rubber O-Ring specialists and buy online. 13 BS1806-109 0. A DuPont ™ Kalrez ® TriLobe ™ seal can be developed to fit any size dovetail groove. 054. A wider dovetail offers more support. 8 μm Ra) Dovetail seal Also here there is a metal to metal contact as long as the con-struction will not deform under system pressure. Special orders in 4-6 working days. See Section 5 for more detail on determining the allowable clearance gap. The "new" front dovetail is the same 11mm as for the rearsight, and is much shallower than the "old" dovetail. A new dovetail groove, which positively retains the O-ring, has been designed and incorporated into the SAE J1453 standard. 11. This is beneficial for special applications where the O-ring has to be fixed by the groove e. However, installing an O-ring into these grooves can be tricky without proper technique. The parameter dashboard in the Results section will immediately show you if the selected O-ring size is suitable for your. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent. 961 0. How. F Groove Depth (Ref. 25 Sealing Details / Elastomer seals O-ring tolerances ± 0. With dovetail sights, you simply file the Sight, never the dovetail. Standard dovetail-slide sets range from a couple inches to 20 in. 090, . 22’s receiver grooves.