ACME thread nut trap for Mendel
thingiverse
To resolve seized up crappy threaded rod leadscrews, shift to 5/16th ACME threaded rods. Despite similar diameter, hex nuts have larger outer diameter that won't fit in existing Mendel nut traps. Redesign the nut trap with correct dimensions for a 5/16 ACME thread heavy-duty nut using QTmium, a fully parametric software. For original Mendel, replace four of x-vert-drive-4off.par pieces with printed redesigns. These hold 5/16 heavy-duty ACME thread hex nuts like this example: http://www1.mscdirect.com/cgi/NNSRIT2?PMAKA=03124013. Replace Z leadscrews with ACME threaded rod for smooth z movement.
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