Horia Jeweling Tool Spindle Changing Support

prusaprinters

<p>Horia jeweling tools come with either 3mm or 4mm replaceable spindles; this support aides in the process of changing them out. &nbsp;The support features 2 ends: one contains a simple taper, the other is slightly more recessed with a flat and taper. &nbsp;A hole in the center ensures that the interior portion of the spindle is not damaged during the removal process.</p><p>For reference, the Horia jeweling tools go by part #PO 61, PO 61-1, or Bergeon part #5372-61. &nbsp;The spindles are Horia part #61-02 (must specify 3mm or 4mm) or Bergeon part #5372-61-B3 for 3mm, Bergeon 5372-61-B4 for 4mm. &nbsp;</p><p>I recommend printing this model with the simple tapered end facing down towards the print bed. &nbsp;This avoids any issues with overhangs. &nbsp;Once printed, test the spindle tips in both ends. &nbsp;The spindles should enter and exit without getting stuck. &nbsp;Tolerances are pretty close with the model so if your spindle gets stuck, enlarge in PrusaSlicer by a couple percentage points. &nbsp;</p><p>This model has been tested on the Prusa i3 MK3S+ and Mini+ with a 0.40mm nozzle at 0.15mm and 0.20mm layer heights.</p><p>The examples in the photos are printed using Overture Matte Light Gray PLA.</p><p><strong>How to switch out the spindle in your Horia Jeweling Tool:</strong></p><figure class="image image-style-align-center image_resized" style="width:75%;"><img src="https://media.printables.com/media/prints/231363/rich_content/3da3897e-c6da-413c-9688-f47298824f05/img_4697.jpg#%7B%22uuid%22%3A%22a2e2b077-edf6-4fa5-aeb4-e69050b1024f%22%2C%22w%22%3A2016%2C%22h%22%3A1512%7D"></figure><p>You will need:</p><ol><li>Horia jeweling tool</li><li>Replacement Horia tool spindle</li><li>3D-printed Horia tool spindle support</li><li>250 Screwdriver (2.5mm width)</li><li>Tweezer</li><li>Small soft-sided hammer (rubber, nylon, rawhide, etc.)</li><li>(Optional) Multi-purpose oil for extra lubrication</li><li>(Optional) Horia jeweling tool bits to test fit</li></ol><p>First, remove the set screw near the top of the base using the 250 screwdriver. &nbsp;Sometimes this set screw can be very tight, so make sure your screwdriver blade is sized correctly to avoid damaging the screw slot. &nbsp;I did not see any Loctite/threadlocker applied to these set screws, so you should not need to use heat to loosen them up. &nbsp;</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/10b5c027-e89c-486e-afed-3014a991ad03/img_4674.jpg#%7B%22uuid%22%3A%224db14424-4607-4767-aa6d-45f2006727ed%22%2C%22w%22%3A1512%2C%22h%22%3A2016%7D"></figure><p>Remove set screw with tweezer and set aside for later.</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/5f280e8c-9ef5-42dc-9189-d6a9f36e9c10/img_4675.jpg#%7B%22uuid%22%3A%2229bd0c5e-ae7f-4937-a8b8-11df65d4f1a6%22%2C%22w%22%3A2016%2C%22h%22%3A1512%7D"></figure><p>Now, you can place the 3D-printed spindle support on the base, centered directly below the spindle. &nbsp;I recommend using the shallower end (tapered-only side) first. &nbsp;If you find the spindle is not budging during the removal process, then try the deeper end (flat &amp; tapered side). &nbsp;</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/d979cb29-d409-46fb-a0ff-4e9087c1d085/img_4677.jpg#%7B%22uuid%22%3A%22703161a3-a431-4310-8162-a127c07ee595%22%2C%22w%22%3A1512%2C%22h%22%3A2016%7D"></figure><p>(Shallow, tapered side)</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/c948cded-e9f2-417b-89fb-4c780ff4db45/img_4694.jpg#%7B%22uuid%22%3A%22541691b0-7d49-4fa6-b31d-2659e89ba862%22%2C%22w%22%3A1512%2C%22h%22%3A2016%7D"></figure><p>(Deeper, flat &amp; tapered side)</p><p>Turn the Horia tool handle so that it lowers the spindle down towards the support. &nbsp;The support will self-center to match the spindle. &nbsp;Eventually, the spindle will bottom out on the support. &nbsp;</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/2c9428b4-3f9c-4fdc-89ce-f1bc4b883c43/img_4678.jpg#%7B%22uuid%22%3A%226f81eb4c-5b74-451f-aa7f-f9d9befe237a%22%2C%22w%22%3A2016%2C%22h%22%3A1512%7D"></figure><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/bbee9474-f323-4b4e-a1a6-745fbc894323/img_4679.jpg#%7B%22uuid%22%3A%228415a90b-d4c9-44fe-9d79-f9aa93109f3e%22%2C%22w%22%3A2016%2C%22h%22%3A1512%7D"></figure><p>(Spindle lowered into position)</p><p>The scary part! &nbsp;Keep turning the handle so that the spindle forces itself off of the base. &nbsp;You should see the spindle and handle assembly start to lift up. &nbsp;If it feels like you are turning with too much force, you may want to back off and switch to the other end of the 3D-printed support (flat &amp; tapered). &nbsp;</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/332dd2f5-71f3-4aa8-8750-67daabbce1a2/img_4681.jpg#%7B%22uuid%22%3A%2261927535-8198-4e55-ab77-cb276b58b5c1%22%2C%22w%22%3A1280%2C%22h%22%3A959%7D"></figure><p>(Flush with base)</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/53e03b9a-5888-464d-8fdd-d339279323d4/img_4682.jpg#%7B%22uuid%22%3A%221e6b1b35-7472-435f-ba86-1a8a988799bf%22%2C%22w%22%3A1280%2C%22h%22%3A959%7D"></figure><p>(Lifted up from base)</p><p>Hooray! &nbsp;The spindle and handle assembly has come loose. &nbsp;Note that there is a circular recess in the assembly that lines up with the set screw. &nbsp;</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/ed6a3a64-5f88-461b-acf5-5822535285f7/img_4683.jpg#%7B%22uuid%22%3A%2227dcaf1e-2364-4028-9bbd-11a8d73e9376%22%2C%22w%22%3A959%2C%22h%22%3A1280%7D"></figure><p>Swap out the old spindle for the new spindle.</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/d707ff7e-fcdc-4fae-9407-24006b482424/img_4684.jpg#%7B%22uuid%22%3A%22e7866c41-affc-45d0-b2f0-d6d80884afc1%22%2C%22w%22%3A2016%2C%22h%22%3A1512%7D"></figure><p>Optional: You may want to add a little lubrication to parts of the assembly to keep the action smooth. &nbsp;</p><p>We are ready to re-install the spindle and handle assembly. &nbsp;Note the correct orientation. &nbsp;The notch in the spindle should be facing towards the front. &nbsp;Remember, the set screw recess should be aligned on the same side as the set screw opening in the base.</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/75ceacc4-ccf1-4f30-bc20-5f5d37f1cf54/img_4696.jpg#%7B%22uuid%22%3A%2275d3485a-f3d6-43b5-95f6-6d6cde662abc%22%2C%22w%22%3A2016%2C%22h%22%3A1512%7D"></figure><p>(Spindle notch)</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/3821db35-d726-4350-9bf4-397eaa1e59c8/img_4686.jpg#%7B%22uuid%22%3A%22ab57736a-710b-4917-bc4c-68e56f052b77%22%2C%22w%22%3A959%2C%22h%22%3A1280%7D"></figure><p>(Correct alignment of handle)</p><p>As it took some force to remove the spindle and handle assembly from the base, we will need to add some force to put it back into position. &nbsp;Once you are sure the alignment is correct, take the soft mallet/hammer and tap the very top of the handle. &nbsp;This will push the assembly down into the base.&nbsp;</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/6399296d-7c33-4433-bc54-62742b9100a5/img_4687.jpg#%7B%22uuid%22%3A%226537b6e4-4de7-4ae7-9512-69834506b1db%22%2C%22w%22%3A1512%2C%22h%22%3A2016%7D"></figure><p>Start with gentle taps, then increase the force as needed. &nbsp;Pressure should be applied downwards and not laterally; you do not want to bend the handle tip. &nbsp;You should see the assembly come flush with the base. &nbsp;Once it is flush, STOP hammering!</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/f8ae9656-5987-4f8a-99d8-af4ea5ace2f4/img_46881.jpg#%7B%22uuid%22%3A%22e423c0fa-e72d-4219-8f40-006b18b5d983%22%2C%22w%22%3A959%2C%22h%22%3A1280%7D"></figure><p>(Gap visible between the top of the base and the bottom of the handle = keep on tapping!)</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/df4d3bd3-af1c-4afe-a427-402532ed310e/img_4690.jpg#%7B%22uuid%22%3A%22b2ba2ec5-589a-455c-9686-c9c8fbdc07ab%22%2C%22w%22%3A959%2C%22h%22%3A1280%7D"></figure><p>(Little to no gap visible between top of base and bottom of handle = you're done!)</p><p>Reinstall the set screw using the tweezer and screwdriver.</p><figure class="image image_resized" style="width:50%;"><img src="https://media.printables.com/media/prints/231363/rich_content/cbfc4f82-833f-47a6-a4a0-7f1bcbe12f6b/img_4691.jpg#%7B%22uuid%22%3A%222e29293f-f01c-48df-8784-a7b53a5ccb12%22%2C%22w%22%3A2016%2C%22h%22%3A1512%7D"></figure><p>Check the function of the Horia jeweling tool. &nbsp;Turn the handle in both directions; the spindle should move freely up and down without resistance. &nbsp;I recommend turning it all the way to the minimum and maximum positions. &nbsp;</p><p>Congrats, you have now changed out the spindle on your Horia tool and made it more useful!</p><figure class="image image_resized" style="width:75%;"><img src="https://media.printables.com/media/prints/231363/rich_content/dce21de8-a078-4255-a96a-7013a930f922/img_4695.jpg#%7B%22uuid%22%3A%22bdbd3932-4c2c-440d-a00c-279d2ea44dd2%22%2C%22w%22%3A2016%2C%22h%22%3A1512%7D"></figure><p>&nbsp;</p><p>&nbsp;</p>