Angle Grinder Chop Saw for EMT Conduit and 2020 Extrusion

prusaprinters

<p>Looking for a better way to cut 3/4" EMT conduit, I could buy an expensive blade for my reciprocating saw or find a better way. I saw an angle grinder mount and decided to make my own to fit the grinder I have. <em>UPDATE -- added a guide for 2020 extrusion.</em></p> <p><strong>WARNING: use at your own risk. Be safe.</strong></p> <p><em>If you find this useful and want to encourage my insanity, buy a <a href="https://www.paypal.me/idig3d/3">cup of coffee</a> for me, a <a href="https://www.paypal.me/idig3d/8">bag of coffee,</a> or you <a href="https://www.paypal.me/idig3d">pick the value</a>. Thanks!</em></p> <p>I made mount for my over 10 years old Harbor Fright angle grinder and it works well. Then I ran across a coupon for a new Harbor Fright angle grinder for $10. I made a mount for the new one, too.</p> <h3>Print Settings</h3> <p><strong>Printer:</strong></p> <p>Creality CR-10</p> <p class="detail-setting rafts"><strong>Rafts: </strong> <div><p>No</p></div> <p><strong>Supports:</strong></p> <p>No</p> <p class="detail-setting resolution"><strong>Resolution: </strong> <div><p>0.2-0.25mm layers</p></div> <p><strong>Infill:</strong></p> <p>25-60% -- 4 or more outlines</p> <p><br/> <p class="detail-setting notes"><strong>Notes: </strong></p> </p><div><p>Designed to be printed without supports and with close tolerances.</p> PLA seems strong enough for the prints I made. PETG may be better. <h3>Post-Printing</h3> <p>Designed for <a href="https://www.harborfreight.com/4-12-in-43-amp-angle-grinder-69645.html">Harbor Freight Angle Grinder model #69645</a> -- often on sale for $15 or less with a coupon. Also, have a clamp for my, much older, #03150 grinder.</p> <p>Needed hardware:</p> <p>1 - 1/4-20 1-1/2" hex bolt</p> <p>1 - 1/4-20 wing nut</p> <p>2 - 1/4 - 1" fender washers</p> <p>2 - #6-32 3/4" screws</p> <p>2 - #6 washers</p> <p>2 - #6-32 nut</p> <p>7 - #8 1-1/4" deck screws</p> <p>1 rubberband</p> <p>12" section of 2x4</p> <p>Insert the #6 screws into the washers and into the holes on the clamp. Add the nuts to the opposite side and tighten down pulling the nuts into the pockets.</p> <p>Loosen the screws and open the clamp up.</p> <p>Wrap the rubberband around the end of the grinder once or twice</p> <p>Place the clamp part over the rubberband on the grinder. May not be necessary for new grinder, but my old one needed a little extra grip.</p> <p>Tighten the screws down evenly. Make sure the grinder is held securely.</p> <p>Using 4 deck screws, screw the base into the end of the 2x4 section.</p> <p>Next, start the hex bolt in the base--on the side with the hex hole. Add a washer, the clamp, and then the other washer. Push the bolt all the way through and tighten with the wing nut.</p> <p>Finally, with the grinder with the cutoff wheel attached, lower it and align the conduit guide so the conduit would be aligned where needed.</p> <p>Be safe.</p> </div></p></p> Category: Tools