3030 - M3 T-nut
thingiverse
A foolproof method for securely fastening MGN12 rails onto 3030 aluminium profiles is revealed! Update: As of June 18th, 2009, the tolerance has been tightened to prevent stripping or spinning the standard M3 nut within the plastic casing. This modification now allows for effortless insertion with minimal hammering or by simply heating the PETG beforehand. To achieve optimal strength and durability, print with 100% infill and slightly reduced flow settings compared to usual parameters, ensuring a robust yet crack-resistant attachment.
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