A lightweight toolchanger for Voron 2. A rewrite from Tapchanger that is easier to build and run but not as rigid. Primarily aiming to support Mini Stealthburner and other lightweight toolheads.
The cool stuff over Tapchanger:
- lightweight, the shuttle + mounting plate is only 42g, half of normal Tap weight
- self locating and tolerant to ~1mm offsets on all axis.
- zero Z travel on the hotend when docking, allowing to install wipe pads, etc
- 3x faster dock sequence with only 16mm z travel, still need to move up to the tool parking area though
- no moving parts, except the bearings
- significantly cheaper to make, no rail needed
- similar rigidness than the linear rail
It's essentially an oversized linear rail, that supports only ~4 mm of travel. The steel rail is replaced by small steel plates where actual contact takes place. The bearings take place of the balls, and we can get away with only 3 per side.
In addition it's a kinematic mount, meaning that it's self aligning and there is no play even if the parts are not aligned precisely. The two middle bearings ride on socket scew heads providing a somewhat flat surface and adjustability to tension the mount.
Check the BOM.
Print the parts.
Assembly instructions coming...
Configure Klipper.
Improvement ideas - bugs, pull requests welcome. Find me on Voron Toolchangers Discord, or file bugs here.
See Tapchanger youtube channel.
- Basic models from Voron Stealthburner and Voron 0.
- Mini SB Orbiter cowling form mozartlovescats.
- Mini SB LGX lite cowling form MC.
Various fixes to refine the rods version. Ready for general testing.
A new experimental version using 3mm rods. See -rods files. Shuttle and mount plates changed, the rest is same.
- Easier to assemble
- Tension adjustment screws easily available
- Runs smoother
- Using smaller 3x8x3 bearings - saves 5 grams and even more rigid.
- Even load distribution between the bearings by adjusting the angles to 26 and 64 degrees.
- Minor model tweaks for better fit and printability.
- Redesigned and optimized - not compatible with V0
- Significanly more rigid
- Supports both Mini and full size Stealthburner
- It can print and looks reasonably rigid
- ~10 Tool chnages so far
- Initial dock, that looks okay for the job