Drag knife holder for chinese CNC

thingiverse

This is a simple drag knife holder for Roland-type drag knife head. Apart from the attached stl files for 3D printing you will need: 1mm x 18mm x 40mm compression spring ([example spring](https://www.ebay.com/itm/Wire-Dia-1-0mm-OD-17-20mm-Length-10-to-100mm-Helical-Compression-Spring-Select/292316182940?hash=item440f66f99c:m:mPTjyFmb59pv6KwMigxMlFw)) 2pcs 6mm x 70mm linear rods ([example rod](https://www.aliexpress.com/item/3D-printer-rod-shaft-WCS-6mm-linear-shaft-length-70mm-chrome-plated-linear-guide-rail-round/32693816648.html?spm=a2g0s.9042311.0.0.1fe54c4dTWR4k6)) 2pcs LM6UU 6mm x 12mm x 19mm linear bearing ([example bearing](https://www.aliexpress.com/item/LM6UU-6mmx12mmx19mm-6mm-linear-ball-bearing-bush-bushing-for-6mm-rod-round-shaft-LM6UU-1pcs/32700975257.html?spm=a2g0s.9042311.0.0.1fe54c4dTWR4k6)) Roland-style drag knife head ([example drag knife](https://vicious1-com.myshopify.com/collections/parts/products/drag-knife-vinyl-cutter)) 3 pairs M4x16 screw and nut ### Remarks * You will probably need a small hammer to push the rods into the appropriate holes in the plastic parts. * the small ring is used to hold the top side of the spring. Use super-glue to stick it under the top plastic part. ### Video https://youtu.be/H5rnK3XhJMA