{"product_id":"math-drawing-compass-bullseye-style","title":"Math Drawing Compass Bullseye Style","description":"\u003cp\u003e\u003cstrong\u003eUpdate (5\/1\/26): \u003c\/strong\u003eI have updated the tension clip to be better at clamping. I have found it works best if the push the two sides of the compass in before tightening to get a stronger hold. If you over tighten it too much the slide layers may come apart. \u003cstrong\u003ePrint profiles may have the old clips unless notes.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eI am a math teacher and needed a class set of compasses. I prefer the \"Bullseye\" style over the classic one but all of the ones to buy seem to break very easily. After testing a few 3D printable ones I found the one from Kezat was best. I adjusted a few things from his design\u003c\/p\u003e\u003col\u003e\n\u003cli\u003eMade the center disk tighter. I have two models available in the file if the main model is too tight for your printer.\u003c\/li\u003e\n\u003cli\u003eI added a small ring on the center disk to help center the compass.\u003c\/li\u003e\n\u003cli\u003eI made the holes for the pencil smaller so it doesn't have the ability to move around as much when using the compass.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eThe best part of this is that if anything breaks you can just print a replacement part.\u003c\/p\u003e\u003cp\u003eTo put together:\u003cbr\u003ePut the tension clips on either side of the slide that is printed with the compass body.\u003cbr\u003eAdd the knob on top and tighten.\u003c\/p\u003e\u003cp\u003eDesign by ShawnBoucke on MakerWorld (license: BY-SA).\u003c\/p\u003e","brand":"Mymadmanlab","offers":[{"title":"Default Title","offer_id":67395538059568,"sku":null,"price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/0809\/5280\/files\/0_469d5652-fae2-457a-9b8e-98973423c288.png?v=1784833769","url":"https:\/\/mymadmanlab.com\/products\/math-drawing-compass-bullseye-style","provider":"Mymadmanlab.com","version":"1.0","type":"link"}