1/4-20 Knob with Nut Trap

thingiverse

I crafted this clamp knob utilizing the customizer and referenced a design on http://www.thingiverse.com/thing:713300. To ensure a 1/4-20 nut was securely contained, I revised the knob to trap it within its structure.\nPrint with the larger surface facing downwards for optimal results. The last layer of the nut trap is precisely located at 9mm from the bottom; to accommodate different layer heights, locate and edit your g-code by searching for G1 Z9. It should identify a line like G1 Z9.000 (keep in mind that this could be slightly different due to varying settings). On the preceding line, insert the command @pause. This will temporarily pause the print as it approaches the layer where the nut trap begins closing in on the compartment.\nPause the process by manually lowering the bed using G1 Z100 and carefully drop a 1/4-20 nut into the recessed area of the clamp knob before hitting resume.