This is a simple adapter that slides into the mounting brackets on the back of a cheap K40 laser cutter so you can attach a 4" dryer duct. You need to cut a piece of 1/16" (1.5mm) craft foam to act as a gasket, and affix it the the flat part of the adapter for a snug fit.
I've printed and tested the fit on this one, and it did fit with a notch cut to clear the screw heads above and below the exhaust vent.
I've just updated this Thing with three more files. V2 reflects a 2.5mm thinner base, for better screw clearance. I've split it into two pieces, too, pA and pB, for smaller printers or reduced warping and support material.
New update: I added an upwards-facing version of the duct. It exists as a full duct or split to avoid supports. It requires a fairly large bed, so you might have to split it yourself to print it on an 8-inch (200-mm) bed.
To do (if requested):
- Reduce the length of the duct connection space to save time and material. Currently, it works just fine, though.
Printed with ABS, though PETG should work as well. It needs to resist the temperature of the laser exhaust.
Parametrically designed in Fusion 360.