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UM2 Cover Hooks

An Ultimaker 2 front door design inspired by the UM2 Plexi Hook design concept by pmdude.

3D printer parts and enhancements

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This is a simple plexiglass front door design for the Ultimaker 2. It simply hangs from the top and snaps to the top of the front plate. It is based on the https://www.youmagine.com/designs/um2-plexi-hook design by pmdude.

In using the original design by pmdude, the plastic would weaken and deform from the heat on prolonged prints.  This caused the hook to sag to the point of the plexiglass falling off.  I redesigned the hook from scratch using a thicker top width with reinforced ribs.  I also beefed up the edge rails to further strengthen the design.

To build this, cut a piece of plexiglass or acrylic.  I used the stuff found in a hardware store for window pane replacement.  Cut a 12" square using a fine tooth circular saw (or just buy a 12" square part).  If you cut it, use a small hand torch on the edge, moving quickly and repeatedly, along the edge to smooth the edge and make it clear.  Rotate around the perimeter and try not to overheat the edge or it will bubble.

Using masking tape, place the tape to mark where the hooks will be positioned, 2" from the outside edge on the left and right.  Place the hooks on the plexiglass so they are inside the tape markers and use a 3 mm drill bit to drill through the plexiglass.  Use a sharp bit at high speed.  This will ensure a perfect alignment.

Print using ABS (ideally) and use an acetone treatment, if desired, to get a smooth, mirror like finish on the parts.

Place the hooks on the plexiglass, and line up the holes.  Push a piece of filament through the hole and snip it off flush with fine wire snips.  Use a small soldering iron to melt the edges of the filament flat so that it splays out a bit and sticks to the hook.

Hook the assembly on the Ultimaker 2, and press down on the lower part of the hook to lock it onto the front of the printer.

Materials and methods

  • 12" x 12" (30cm x 30cm) plexiglass or acrylic, 3/32 (2.35mm) thick

  • A few inches of filament



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09a7c39effc5cb374e5b383680f12974?default=blank&size=40Владимир Слободенюк added this to the Ultimaker 2 Extended + collection ago
C04d790d01353ce3ff68ef48d5c6028b?default=blank&size=40Mirek Landsman added this to the ULTIMAKER collection ago
Bc09a75579ad57acf83281f272cc3069?default=blank&size=40jpyt added this to the Ultimaker collection ago
Dbb743597ca91e38558532c3c38a4d04?default=blank&size=40Stuart Miles added this to the Stuff collection ago
A26ec75cd05acc10183d10c0cfb50551?default=blank&size=40digifiel added this to the 3d tools collection ago
Mini bobahelmet1Tommy Napier added this to the Upgrades collection ago
51fcb0fa83217ed5d3ebeaba1de3ca76?default=blank&size=40hanndoddi added this to the ultimaker collection ago
C440ad401e811da812c31f7f8941fc6e?default=blank&size=40vegasracer added this to the Other stuff collection ago
C547b810270b9980d0200c7f15c58e0a?default=blank&size=40ThomasBe added this to the PrinterAcc collection ago
C2d603fa1793e1c437ce63fb0d9c4fa6?default=blank&size=40microdev published this design ago
C2d603fa1793e1c437ce63fb0d9c4fa6?default=blank&size=40microdev printed this ago
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Printed on:
ultimaker 2
Great results
Printed using a .6mm nozzle at high speed and smoothed with an Acetone treatment