Universal horizontal unwinder on balls

cults3d

Thanks to this unwinder, reels with holes can be printed ranging from 33mm to 52mm in diameter. The 52mm diameter corresponds to Chromatik, PolyFlex, PolyPlus coils and all filaments sold by Dagoma. Balls allow for a ball bearing behavior with axial contact thus greatly facilitating the rotation of the unwinder. For my part, I used five balls of 16mm diameter between which I inserted balls of 14mm allowing me to maintain space between those of 16mm ensuring good guidance in rotation. You can use balls up to 20mm in diameter and a minimum of 14mm. The hole in the rotary table is wider providing safety in case the ball guide is not sufficient, but the absence of contact during normal operation guarantees a hard point free guide. I used beads I had being small, I think the unwinder will work better with them rather than with the beads themselves printed in three-dimensional. Thanks to the balls, coil mass is not limited. To reduce the impact of bead lamination on PLA, you can print it with a higher fill rate than mine if you think it necessary. To reduce the risk of the bottom plate rotating during use, you can insert an adhesive material into the five holes located below. In my case, I chose Patafix. Designed and modelled on SolidWorks.