Dove-tailed press fit LM8UU X-carriage
by Wired1, published
Suits a Mendel Prusa, Mendel Max, Mendel Pro or any printer with 50mm spaced x-axis.
Also features fore and aft fan holders for my VGA fan holder thingiverse.com/thing:29158, wire loom anchor points at the rear and integrated one-sided belt clamp for T5 or XL belts.
Check back for the quick fit extruder mounts I am working on next.
I have also included the bearing holder clearance file I used to make the carriage if anyone else wants to have a go at this type of assembly, it automatically creates a gap of 0.25mm to allow the two parts to slide together.
30 September - Updated version XC3.6 with added material to prevent warping. Also has additional mounting points for my quick fit extruder hardware.
Quick fit latch here: thingiverse.com/thing:31528
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It is a close tolerance fit on my printer but I did have one loose corner on my prototype too so I put a drop of glue under itlike you suggest and it has never moved since. Yes the trick would be to slide the rails through when you are doing this to help everything align better.
My bearing holders slide in OK, but they are not particularly snug. Â I'm worried about them shifting while printing. Â I'm thinking of securing them with a very small dab of epoxy. Â I guess it would be advisable to do so while the whole carriage assembly in actually on the X Axis bars so that I can assure perfect alignment
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You need to have your printer calibrated to print the close tolerance parts and you will want to accurately measure your filament size prior to slicing to get this to work correctly.
Run a 3mm drill through the machine screw holes and it's good to go.
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