Drag Knife and Laser Attach for TronXY X5SA

prusaprinters

After taking over 2 years to correct the slipping Z-axis rods on my X5SA, I had already acquired several other 3d printers. Needing a platform for laser engraving and a drag-knife, the X5SA seemed to fit the bill for that. The drag knife design is borrowed from (insert here). But after several attempts at printing it, I realized it wasn't meant for what I was doing, apparently. So I created the drag-knife mount bracket in Fusion 360. You will also need these parts that fit this bracket: Velcro, 3/4"wide x 3" for laser attachment. Soft spring from Ace Hardware, # 540281 Specs: 2.5" x 9/16 w/ wire diam. .026WG Needle Bearings $7.99 for set of (2). https://www.amazon.com/gp/product/B08J3YF796/ref=ppx\_yo\_dt\_b\_asin\_title\_o02\_s00?ie=UTF8&th=1 Roland Cutting Plotter $16.99 https://www.amazon.com/gp/product/B07P8DMC2J/ref=crt\_ewc\_img\_dp\_1?ie=UTF8&psc=1&smid=A16E8QT064DE4Z M3 x assortment, hex head screws, nuts, and washers $20.99, if you don't already have them! https://www.amazon.com/1215pcs-Assortment-Stainless-Hexagonal-Tweezers/dp/B098B2XN7X/ref=sr\_1\_4?crid=A2PEHU0WRGN1&keywords=m3+screw+assortment+socket+head&qid=1642713349&sprefix=M3+screw%2Caps%2C109&sr=8-4 Try printing in PLA at a scale of 101% due to shrinkage. The sliding diameter of the Roland knife is 11.50mm. The cylindrical shim goes over the knife so that it will fit inside of the needle bearings. The needle bearings should just fit into the drag knife mount, allowing the knife to rotate in the mount, freely. You will need a spring, 12mm inside diameter to go above the knife and seat in the top of the mount into the recessed hole there. That spring just puts very slight pressure on the knife. Hit your local hardware store for that, as the ones on Amazon, you never know how stiff they are. The cylindrical shim has been revised again. It prints at 1mm thickness. Print at 101% for shrinkage. It must fit perfectly inside the bearings, and the knife must fit perfectly inside it. The knife mount attaches to the carriage mount with M3 screws, and is very adjustable with the long slot. I use Velcro to attach my laser to the carriage mount, and this way, you can set the knife below whatever other accessory you have on the carriage. The laser has a 20mm focal length, which leaves a lot of room between the bottom of it and the knife. Category: 3D Printer Parts