# US 2019/0168346 A1 · Precision gun smith platform > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0168346 A1 - Document ID: US20190168346A1 - Status: Published application - Kind: A1 - Application number: 16/265,750 - Filed: 2019-02-01 - Published: 2019-06-06 - Earliest claimed: 2016-06-28 - Applicants: Stage 5 Enterprises, LLC - Inventors: Charles Chang; Emil Chao - Web page: https://patentgrep.com/patent/US20190168346A1 ## CPC - B23Q 3/062: {adapted for holding workpieces having a special form or being made from a special material} - B23B 47/28: Drill jigs for workpieces (equipment for setting or guiding the drill B23B49/00) - B23C 3/00: Milling particular work; Special milling operations; Machines therefor (milling gear-teeth B23F, {heat assisted machining B23P25/00}) - B23C 3/13: Surface milling of plates, sheets or strips - B23Q 3/005: {Guides for workpieces} - B25H 1/0042: {Stands (B25H1/0071 takes precedence)} - B25H 1/02: of table type - B25H 1/08: with provision for attachment of work holders - B25H 1/10: with provision for adjusting holders for tool or work - F41A 29/00: Cleaning or lubricating arrangements (injecting fluids into barrels or cartridge chambers F41A13/04 {; ammunition for cleaning purposes F42B5/24}) - F41C 3/00: Pistols, e.g. revolvers (specially adapted for underwater use F41C9/06; for slaughtering or stunning animals A22B; for shooting bolts into concrete constructions, metal walls or the like B25C) - B23Q 2703/10: Devices for clamping workpieces of a particular form or made from a particular material - F41A 3/66: Breech housings or frames; Receivers - B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT - B23B: TURNING; BORING (arrangements for copying or controlling B23Q) - B23C: MILLING (broaching B23D; broach-milling in making gears B23F; arrangement for copying or controlling B23Q) - B25H: WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS (storing or packaging B65) - F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE - F41C: SMALLARMS, e.g. PISTOLS, RIFLES (functional features or details common to both smallarms and ordnance, mountings therefor F41A; projecting missiles without use of explosive or combustible propellant charge F41B); ACCESSORIES THEREFOR ## Abstract A jig for finishing a workpiece with a handheld router or other handheld motor-driven rotational tool assembly is provided. The jig includes a baseplate that is precisely aligned and attached to a router. Guides, including a main guide and a support guide, are provided. The main guide is configured to precisely align with and fasten to the base plate in several different jig configurations. Right-angle adaptors attach to the guides and precisely align with and attach to the guides and the base plate to form several different jig configurations. Side plates secure the workpiece therebetween and provide a surface along which the main guide may slide to facilitate finishing operations on the workpiece. ## Claims ### Claim 1 A jig for finishing a workpiece with a handheld, motor-driven rotational tool assembly, the jig comprising: a baseplate comprising tool alignment holes, tool attachment holes, a tool bit hole, the tool alignment holes aligning the baseplate to the handheld tool assembly, and the tool attachment holes facilitating secure fastening of the baseplate to the tool assembly such that a tool bit connected to the tool assembly is extendable through the tool bit hole; base plate alignment holes disposed on the baseplate to facilitate several different jig configurations, and base plate attachment holes; guides comprising a main guide and a support guide, the main guide comprising guide alignment holes that correspond with one or more of the base plate alignment holes to align the main guide into one of the several different jig configurations, and the main guide and the support guide comprising guide attachment holes configured to facilitate secure fastening to the base plate via the base plate attachment holes; right-angle adaptors that attach to the guides, the right-angle adaptors comprising adaptor alignment holes that correspond with one or more of the base plate alignment holes to align the main guide attached to one of the right-angle adaptors into one of the several different jig configurations, and the right-angle adaptors comprising adaptor attachment holes configured to facilitate secure fastening to the base plate via the base plate attachment holes; and side plates that together secure the workpiece therebetween, the side plates providing a surface along which the main guide may slide to facilitate finishing operations on the workpiece. ### Claim 2 (depends on 1) The jig of claim 1, further comprising a multifunctional gauge comprising gauge alignment holes corresponding with the tool alignment holes and the tool bit hole of the base plate that align the tool bit connected to the handheld tool with the base plate, and depth gauges disposed along an edge of the multifunctional gauge to set cutting depths of the tool bit. ### Claim 3 (depends on 1) The jig of claim 1, wherein the several different jig configurations comprise: an offset straddle configuration where the main guide is attached to a first right-angle adaptor of the right-angle adaptors and the support guide is attached to a second right-angle adaptor of the right-angle adaptors, the main guide being positioned and attached to the base plate closer to the tool bit hole than the support guide; a center straddle configuration where the main guide is attached to the first right-angle adaptor, the support guide is attached to the second right-angle adaptor, and the main guide is positioned and attached to the base plate at the same distance from the tool bit hole as the support guide; and a side milling configuration where the main guide is aligned and attached directly to the base plate and the support guide is attached directly to the base plate. ### Claim 4 (depends on 3) The jig of claim 3, wherein the main guide and the support guide are disposed on the base plate at a first orientation in the offset straddle configuration and the center straddle configuration, and the main guide and the support guide are disposed on the base plate at a second orientation in the side milling configuration. ### Claim 5 (depends on 3) The jig of claim 3, wherein the workpiece is an eighty percent firearm, and the offset straddle configuration facilitates a frame decking operation, the center straddle configurations facilitates the frame decking operation and a barrel seat milling operation, and the side milling configuration facilitates a top and bottom rail finishing operation. ### Claim 6 (depends on 1) The jig of claim 1, wherein the workpiece is an eighty percent firearm, and the side plates comprise a sear hole and hammer hole template. ### Claim 7 A method of using a jig to finish a firearm with a handheld motor-driven rotational tool assembly, the method comprising: aligning a base plate of a jig to a handheld motor-driven rotational tool assembly via tool alignment holes disposed in the base plate and a gauge alignment holes in a multifunctional gauge, and securely fastening the base plate of the jig to the handheld motor-driven rotational tool assembly via tool attachment holes disposed in the base plate; securing the firearm between side plates to stabilize the firearm; assembling right-angle adapters to a main guide and a support guide and attaching the right-angle adapters, main guide, and support guide to the base plate to form the jig into a straddle configuration; decking a top of a frame of the firearm with the handheld motor-driven rotational tool assembly; milling a barrel seat out of the top of the firearm with the handheld motor-driven rotational tool assembly; reassembling the jig with the main guide and the support guide into a side milling configuration; and milling top and bottom rails of the firearm with the handheld motor-driven rotational tool assembly. ### Claim 8 (depends on 7) The method of claim 7, further comprising drilling hammer and sear holes in the firearm via hammer and sear hole templates disposed in the side plates, and countersinking the hammer and sear holes. ### Claim 9 (depends on 7) The method of claim 7, wherein the straddle configuration includes an offset straddle configuration and a center straddle configuration, the decking step utilizes the offset straddle configuration and the center straddle configuration, and the milling the barrel seat step utilizes the center straddle configuration. ### Claim 10 (depends on 7) The method of claim 7, wherein the milling the top and bottom rails step comprises at least one first milling pass to define an initial rail width, at least one second milling pass to define the bottom rail, and at least one third milling pass to define the top rail, wherein the main guide is precisely aligned with the base plate via alignment pins. ### Claim 11 A jig for finishing a workpiece with a handheld motor-driven rotational tool assembly, the jig comprising: a baseplate attachable to a handheld motor-driven rotational tool assembly, the base plate comprising base plate alignment holes and base plate attachment holes disposed on the baseplate to facilitate several different jig configurations; guides comprising a main guide and a support guide, the guides comprising guide alignment holes and guide attachment holes corresponding to the base plate alignment holes and the base plate attachment holes, the guides being attachable to the base plate in a plurality of orientations to form the several different jig configurations. ### Claim 12 (depends on 11) The jig of claim 11, wherein the base plate further comprises tool alignment holes, tool attachment holes, and a tool bit hole, the tool alignment holes aligning the baseplate to the handheld motor-driven rotational tool assembly, and the tool attachment holes facilitating secure fastening of the baseplate to the handheld motor-driven rotational tool assembly such that a tool bit connected to the handheld motor-driven rotational tool assembly is extendable through the tool bit hole. ### Claim 13 (depends on 12) The jig of claim 12, further comprising a multifunctional gauge comprising gauge alignment holes corresponding with the tool alignment holes and the tool bit hole of the base plate that align the tool bit connected to the handheld tool with the base plate, and depth gauges disposed along an edge of the multifunctional gauge to set cutting depths of the tool bit. ### Claim 14 (depends on 11) The jig of claim 11, further comprising right-angle adaptors that attach to the guides, the right-angle adaptors comprising adaptor alignment holes that correspond with one or more of the base plate alignment holes to align the main guide attached to one of the right-angle adaptors into one of the several different jig configurations, and the right-angle adaptors comprising adaptor attachment holes configured to facilitate secure fastening to the base plate via the base plate attachment holes. ### Claim 15 (depends on 14) The jig of claim 14, wherein the several different jig configurations comprise: an offset straddle configuration where the main guide is attached to a first right-angle adaptor of the right-angle adaptors and the support guide is attached to a second right-angle adaptor of the right-angle adaptors, the main guide being positioned and attached to the base plate closer to the tool bit hole than the support guide; a center straddle configuration where the main guide is attached to the first right-angle adaptor, the support guide is attached to the second right-angle adaptor, and the main guide is positioned and attached to the base plate at the same distance from the tool bit hole as the support guide; and a side milling configuration where the main guide is aligned and attached directly to the base plate and the support guide is attached directly to the base plate. ### Claim 16 (depends on 15) The jig of claim 15, wherein the main guide and the support guide are disposed on the base plate at a first orientation in the offset straddle configuration and the center straddle configuration, and the main guide and the support guide are disposed on the base plate at a second orientation in the side milling configuration. ### Claim 17 (depends on 15) The jig of claim 15, wherein the workpiece is an eighty percent firearm, the offset straddle configuration facilitates a frame decking operation, the center straddle configuration comprises a first center straddle configuration that facilitates the frame decking operation and a second center straddle configuration that facilitates a barrel seat milling operation, the second center straddle configuration being a precision aligned configuration via alignment pins, and the side milling configuration facilitates a top and bottom rail finishing operation. ### Claim 18 (depends on 11) The jig of claim 11, further comprising side plates that together secure the workpiece therebetween, the side plates providing a surface along which the main guide may slide to facilitate finishing operations on three sides of the workpiece. ### Claim 19 (depends on 18) The jig of claim 18, wherein the workpiece is an eighty percent firearm, and the side plates comprise a sear hole and hammer hole template.