Zero Play Guide Bars for table saw miter slot

prusaprinters

<p>The zero play guide bar system is a huge benefit for anyone making and using jigs in a climate where conventional wood guide bars will expand and contract. I will use this with my table saw miter slot but you may find it useful with your band saw or router table.</p> <p>Microjig has devised a nice solution <a href="https://www.microjig.com/products/zeroplay">https://www.microjig.com/products/zeroplay</a><br/> I relied upon the users manual to inform my design and hardware choices.<br/> <a href="https://s3-us-west-2.amazonaws.com/microjig-ecommerce-staging/uploads/resources/files/ZEROPLAY-User-Manual.pdf">https://s3-us-west-2.amazonaws.com/microjig-ecommerce-staging/uploads/resources/files/ZEROPLAY-User-Manual.pdf</a></p> <p>This current model has adjustability to fit slots from 0.688-0.774in (17.5-19.7mm)<br/> STL UNITS ARE IN INCHES</p> <p>There are two configurations for this design. One uses heat-set inserts, one uses a little bit longer fasteners into low-profile hex nuts.</p> <p>BOM<br/> --- For Assembling the bars for heat-set insert configuration ---</p> <p>2 - top_V2_in.stl prints</p> <p>2 - base_in.stl print</p> <p>12 - 8-32 thread size, 0.185" installed length heat-set inserts for plastics (mcmaster: <a href="https://www.mcmaster.com/#93365a140/=1c5hk4f">https://www.mcmaster.com/#93365a140/=1c5hk4f</a>)</p> <p>6 - 8-32 thread 3/16" long button head hex drive screws (mcmaster <a href="https://www.mcmaster.com/#91306a264/=1c5hkqt">https://www.mcmaster.com/#91306a264/=1c5hkqt</a>)</p> <p>--- For Assembling the bars for hex nut configuration ---<br/> 2 - top_V2_nuts_in.stl prints</p> <p>2 - base_nuts_in.stl print</p> <p>12 - 8-32 thread size Narrow Hex Nut<br/> (<a href="https://www.mcmaster.com/#90760a009/=1ccrera">https://www.mcmaster.com/#90760a009/=1ccrera</a>)</p> <p>6 - 8-32 thread 1/4" long button head hex drive screw<br/> (<a href="https://www.mcmaster.com/#91255a190/=1ccrmoc">https://www.mcmaster.com/#91255a190/=1ccrmoc</a>)</p> <p>--- For attaching the bars to your specific jig ---</p> <p>6 - 8-32 thread 1/2" long* pan head screw (mcmaster <a href="https://www.mcmaster.com/#91735a194/=1c5hman">https://www.mcmaster.com/#91735a194/=1c5hman</a>)</p> <p>6 - #10 flat washer (mcmaster <a href="https://www.mcmaster.com/#92141a011/=1c5hmtj">https://www.mcmaster.com/#92141a011/=1c5hmtj</a>)<br/> To adjust, you will need a 3/32" allen wrench</p> <p>Follow the user guide (linked above) for the setup/installation. I did NOT create a stop piece for setup, as you can easily use a clamp and scrap materials to the same effect.</p> <p>After printed parts were removed from printer, I used some sandpaper to touch-up the long faces of my prints (there was a little deformation around the knit line). I also suggest that you flatten the bottom face after installing the inserts as material will swell around the holes on the underside.</p> <p>*This length with change depending on how thick the base plate of your jig is or how deep you're counterboring into that material.</p>