Clockmaker - 140mm Fan Fume Extractor

thingiverse

This is the workhorse part of The Clockmaker: the fume extractors. This is designed to smoothly funnel through a 120mm cornhole into a 130mm square charcoal filter and through a 140mm fan. ## Materials - 1x top - 1x base **printed upside down** - 8x edge triangles - 8x M4 hex nuts - 4x M4 30-35mm screws for the fan - 4x M4 screws long enough to mount the base - 1x 140mm fan - 1x 130mm square charcoal filter Additionally, you will need: - E6000 or some other strong adhesive - Proper protection when using the glue and during the curing process - Clamps ## Sanding/Glue Prep - Sand down the rougher sections of the top and bottom pieces. They mate, so you want a smooth connection. Start with 150 grit if the surface is ugly and there's a lot of roughness. - Check the mating of the two parts and move to 220 grit to finish any patches preventing a good join. - **Also make sure that, with both halves together, you can easily insert and remove a filter!** ## Gluing the Hex Nuts - *Wear proper protective gear including gloves and a half mask respirator or equivalent.* - Use a toothpick or something else small and disposable to apply a little glue inside the hex nut holes, immediately insert a nut after applying the glue. - Make sure the nut is set before applying more glue and edge pieces. Clamp each edge piece down over the nut carefully but firmly. - Let set for at least a day if you are using E6000, preferably in an enclosed container or outdoors to ventilate. ## Gluing the Halves Together - Wear protective gear again. Seriously. - Your two halves should have the nuts set under edge pieces with a nice, even surface. Placing them together should give a good fit. If both of these are correct, get out the E6000 and toothpick again. - Take this opportunity to thread an M4 screw through each hex nut. The goal is to remove and push down any excess glue that got in the threads. - Apply E6000 along the mating edges. You want a *thin* layer to start with. - Squish them together, removing any excess glue that comes out. Check for gaps and add more glue there. - Clamp your work in place on each corner and let set for two days. ## Finishing Up After everything is glued in place, all that is left is mounting the fan, inserting a filter, and mounting the block.