My wife bought a Mini 2 recently. I put Klipper on it. It prints awesome except for the first layer.
Is there a “bible” or “recipe” for a retractable Voron Klicky Probe style Z endstop at the bed (for bed leveling)? I want to ditch those stupid washers and the top Z-endstop.
If there is no bible or tutorial I’ll figure it out. Just thought I’d ask before I DIY. If I DIY I’ll end up ditching that Titan Aero thing and use a different 2.85 hotend. Trying to avoid modifying a Voron style hotend to work in the Mini2.
Thanks
I just added BLTouch to the Mini 2’s standard SE 0.5 toolhead.
Print up this, replace the old shroud, and tell Klipper what pins you’re connected to:
Lulzbot SE Toolhead Blower Shroud with BLTouch Mount by DavidJohnson - Thingiverse
If you use a BLTouch clone, it’s about $15 to do the upgrade.
I had terrible results with the BLTouch until I had added X axis twist compensation. I think the drag chain ends up pushing the nozzle forward more and more as you get to the right side of the bed, and with the BLTouch being further forward, it is affected much more by the push than the acutal nozzle.
Thank you @Wrathernaut. That forward lean from the toolhead, which correlates to a -Y movement of the nozzle, and layer shifting… Been there, done that. We own a bunch of taz5 printers that we converted to corexz ( GitHub - IggyTheWolf/TazWire: Lulzbot Taz6 to core XZ via Voron Switchwire · GitHub ). That forward lean was a problem with the taz5 machines. My wife and I do a little bit of USA only printing so we chose to buy like 15x taz 5 printers and use linear rods for Z. (we bought 15 or 16 printers to make 8x printers) I had to space out the Z linear rods to avoid that “lean” or that pull, or drag, or binding, etc. (because we use Igus)
So go figure… Lulzbot added a second set of linear rods to the Mini2… Except the weight of that toolhead and the chain, and Igus… @Wrathernaut thanks for your link. I’ll print it and get it up and running with a BL Touch we have laying around. Not sure that I’ll keep the Mini2 in stock form for long. Your comment is making me think long and hard about spreading out the Z-axis rods and converting the Mini2 into a corexz machine.
Thanks.
EDIT:
Taking a second look at the frame on the Mini2… That would be an awesome little CoreXY machine. Will someone else please do the work and post up the STL files? There are a ton of screw holes in that frame…
The only problem I have with the Mini2 since adding BLTouch is all related to all the play in the toolhead. Having multiple plastic plates for the swappable toolheads and fairly heavy toolheads ruins precision.
I wonder how much better it would be with the Titan Aero bolted directly to linear rail.
If you want to convert a Mini 2 to CoreXZ, the place to start would be the Mini 3 files on Gitlab. The frames are not the same size, but I bet if you cut the extrusions and linear rails a bit smaller, the whole Mini 3 CoreXZ mechanism could be fit into the Mini 2 frame.