Drybox Tray

Printing from dryboxes seems all the rage. I built some but without a printer enclosure, I had to set the drybox on the table. The tubing connecting the drybox to the Nextruder was a meter long. Not a problem for the Nextruder to pull, but when I was done, I had to stuff a meter of filament back in the drybox. Also, it is impossible to thread a meter of TPU through the tubing. I designed this tray to mount the drybox on top of my MK4 and require much less tubing. Also takes up less space on the table.

I made it in 2 parts, a bracket which snaps to the MK4 top rail just like the Prusa spool holder, and a tray for the drybox. The tray is big enough for the version of cereal box based dryboxes that mount upside down (I use one of these, see photo). There is a 6mm high lip around the tray to keep the drybox from sliding off.

I printed the bracket in PETG with 15% infill since it has to snap on the rail. I printed the tray in PLA only because it kept warping when I tried PETG. Obviously, PETG would work also. The tray is 248mm long so it just fits on the MK4 build plate.

Since I live in the US, I used 6-32 X ½" socket head cap screws (4 required) and 6-32 nuts to assemble the tray to the bracket, but 3mm hardware will also work. No threaded inserts or imbedded nuts required.

Used just the clip that attaches to the MK4 rail