{"product_id":"pastamatic-leadscrew-for-43mm-sub-spool-spool","title":"Pastamatic Leadscrew for 43mm Sub-spool (⅔ Spool)","description":"\u003cp\u003eThis is a custom \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/models\/16606\"\u003ePastamatic \u003c\/a\u003eleadscrew designed for use with \u003cstrong\u003e43mm-wide\u003c\/strong\u003e filament sub-spools (2\/3 of a Bambu spool). If you use Cernott’s modular spool system, this leadscrew helps evenly distribute filament while respooling, preventing tangles and uneven winding.\u003c\/p\u003e\u003ch4\u003e\u003cu\u003eWhy I Designed This\u003c\/u\u003e\u003c\/h4\u003e\u003cp\u003eI initially tried using the \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/models\/385483\"\u003ePastamatic Leadscrew for Divided Spools\u003c\/a\u003e by @AeonJoey, but I found the narrower threads on that leadscrew made my follower tooth bind and prevented smooth operation. I know that model works great for others, but I wanted to make some adjustments for my own needs. I've rearranged and adjusted the threads on the original Pastamatic leadscrew, ensuring the follower tooth properly follows the self-reversing path while maintaining the correct spacing for \u003cstrong\u003e43mm-wide sub-spools\u003c\/strong\u003e.\u003c\/p\u003e\u003ch4\u003e\u003cu\u003eCompatibility Notes\u003c\/u\u003e\u003c\/h4\u003e\u003cp\u003eThis leadscrew was designed for Cernott’s \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/en\/models\/727544\"\u003e2\/3 modular spool (2\/3 Bambu Spool, ~550g)\u003c\/a\u003e. If anyone tries it with different spools of the same ⅔ Bambu size, let me know!\u003c\/p\u003e\u003ch4\u003e\u003cu\u003eRecommended Mods for Best Results\u003c\/u\u003e\u003c\/h4\u003e\u003cp\u003eWhile this leadscrew improves filament distribution, proper spindle stabilization is crucial—especially on narrow spools. They are completely optional, but I strongly recommend using these three mods to keep the spindle aligned and prevent shifting. Without them, it may be more difficult to achieve consistent results:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/models\/45217\"\u003ePastamatic Axis by @Poli27\u003c\/a\u003e  Prevents the receiving spindle from shifting away from the drill.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/models\/82887\"\u003ePastamatic Target Side Clip by @andythilo\u003c\/a\u003e  Locks the receiving spindle securely into the gears.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/models\/82463\"\u003ePastamatic Spool Shims by @dadhacks\u003c\/a\u003e  Prevents the receiving spindle from shifting toward the drill.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg class=\"image_resized\" style=\"width: 40.09%\" src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000001192824\/design\/2025-03-09_e152739173538.jpg\"\u003e\u003cimg class=\"image_resized\" style=\"width: 39.37%\" src=\"https:\/\/makerworld.bblmw.com\/makerworld\/model\/DSM00000001192824\/design\/2025-03-09_c6a51313a001f.jpg\"\u003e\u003c\/p\u003e\u003cp\u003eUsing these mods, I was able to achieve consistent, even filament winding. If you have an alternative method for stabilizing the receiving spindle on a stock Pastamatic, I’d love to hear about it!\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ch4\u003e\u003cu\u003ePrint Settings \u0026amp; Assembly\u003c\/u\u003e\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eLayer Height:\u003c\/strong\u003e 0.16mm (like the original design) on threads and gear teeth to preserve smooth operation, 0.28mm on all other layers to minimize print time\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWalls:\u003c\/strong\u003e 2\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInfill:\u003c\/strong\u003e 5% Cross Hatch\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSupports:\u003c\/strong\u003e Not needed\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e PLA or PETG recommended\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eTo install, replace the original Pastamatic leadscrew with this one, fully load a spool with sub-spools, with your target \u003cstrong\u003e2\/3 size sub-spool\u003c\/strong\u003e on the side \u003cstrong\u003eclosest to the gears\u003c\/strong\u003e, and use the recommended mods to ensure smooth operation.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ch4\u003e\u003cu\u003eOther Leadscrew Sizes\u003c\/u\u003e\u003c\/h4\u003e\u003cp\u003eI have also designed leadscrews for other modular spool sizes:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/models\/1192682\"\u003eLeadscrew for 23mm Modular Spools (1\/3 Bambu Spool)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/models\/1192771\"\u003eLeadscrew for 33mm Modular Spools (1\/2 Bambu Spool)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you need a different size, check those out!\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003ch4\u003e\u003cstrong\u003e\u003cu\u003eNotes and Tips\u003c\/u\u003e\u003c\/strong\u003e\u003c\/h4\u003e\u003cp\u003eSome filament manufacturers like SUNLU sell 250g mini spools in assortment bundles. It's a great way to try out lots of different colors and types of filament, but these tiny spools do not fit in the AMS, making them inconvenient to use. By respooling onto 1\/3 size modular spools, you can store them more efficiently and use them directly in the AMS without hassle. If you use those 250g mini-spools, check out the excellent 1\/3 sub-spool designs by \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/en\/models\/727503\"\u003eCernott \u003c\/a\u003eand \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/models\/59357\"\u003egiuliolibrando\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eI printed my custom leadscrews in the same color as the matching sub-spools. It makes it easier to grab the right leadscrew when re-spooling.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThank you\u003c\/strong\u003e \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/@GekoPrime\"\u003e@GekoPrime\u003c\/a\u003e for the Pastamatic Filament Spool Winder, and thank you \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/@giuliolibrando\"\u003e@Giuliolibrando\u003c\/a\u003e, \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/@Cernott\"\u003e@Cernott\u003c\/a\u003e, \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/@assorted_mess\"\u003e@assorted_mess\u003c\/a\u003e, \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/@AeonJoey\"\u003e@AeonJoey\u003c\/a\u003e, \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/@Poli27\"\u003e@Poli27\u003c\/a\u003e, \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/@andythilo\"\u003e@andythilo\u003c\/a\u003e, \u003ca target=\"_blank\" rel=\"noopener noreferrer ugc\" href=\"https:\/\/makerworld.com\/@dadhacks\"\u003e@dadhacks\u003c\/a\u003e for your designs and inspiration.\u003c\/p\u003e\u003ch4\u003e\u003cu\u003eFeedback \u0026amp; Future Improvements\u003c\/u\u003e\u003c\/h4\u003e\u003cp\u003eIf you test this leadscrew with other divided spools, please share your results! I’m open to feedback and improvements to make this as reliable as possible.\u003c\/p\u003e\u003cp\u003eDesign by dad on MakerWorld (license: BY-SA).\u003c\/p\u003e","brand":"Mymadmanlab","offers":[{"title":"Default Title","offer_id":67398429770032,"sku":null,"price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/0809\/5280\/files\/0.publish_2beca9d7-9749-494e-ba59-d55f9de78cda.jpg?v=1784884175","url":"https:\/\/mymadmanlab.com\/products\/pastamatic-leadscrew-for-43mm-sub-spool-spool","provider":"Mymadmanlab.com","version":"1.0","type":"link"}