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Economical Drawers

by O3D, published

Economical Drawers by O3D Sep 2, 2016
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Summary

Thanks for the blog post Adafruit!

I saw a number of different small parts drawers on Thingiverse and noticed that most of them used a lot of filament. I wanted to make a cost efficient version that looked beautiful and was easy to print. This is the outcome:

Economical Shelf: 150 grams (including supports and raft)
Shelf before voronoi: 217 grams (no supports with raft)

Saved 67 grams of filament!

Why did I include a raft? My print bed has a hard time sticking larger objects to the bed. This will print excellently without a raft


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Update 5/30/2017

The voronoi pattern I use saves more filament than other patterns I've tried which don't require supports. I will upload a second version which does not require supports and will use roughly the same amount or less grams of filament while also reducing print time.

Print Settings

Rafts:

Doesn't Matter

Supports:

Yes


Notes:

  • Print the shelf at 101%
  • Print the drawers at 100%
  • Supports are needed for the shelf but not for the drawers
  • Rafts are not necessary

How I Designed This

The voronoi pattern not only looks nice but it gives rigidity to the shelf while also reducing the use of filament. The many holes in the pattern also allow for easy wall mounting. The shelves are 10 mm thick rims that are big enough and strong enough to support the drawers without having to waste a lot of filament. I designed each part with the intent to reduce the need for supports.

152 mm x 100 mm x 100 mm

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Prints great on a 120x120x120 bed scaling everything to 75%. I had to scale the drawers to 74% because the tolerances got too tight from the down scale. You should make a 4 drawer version for those limited to 120mm.

Yeah I should have read this first. Trying to sand down the drawers is a pain in the backside...but mostly my fingers.

Will need supports. Got about 3 hours in and many parts were not holding up so I ended up stopping to prevent further waste. Printed with a anet a8 with pls.

I should have specified that the shelf needed supports. Let me know how it turns out!

Jan 29, 2017 - Modified Jan 29, 2017
Tavero - in reply to O3D

If you need supports for this print, just use a solid wall.
That way it is more stable, you don't have any waste material, and print failures are much less common.

I think overall far more material was wasted already because of failures, than was saved by the holes in the wall

There are only a few areas on the shelf that need support. I compared the voronoi shelf to the shelf before applying the pattern. The shelf with pattern, supports and raft, and 20% infill came out to 150 grams. The shelf without pattern, no supports, with raft, and 20% infill came out to 217 grams. You save 67 grams. Remove the raft and the full shelf is 199 grams. You save 49 grams.

I try it in ABS but it's not working. Fail at 50% due to thermal retractation (even with 100°C bed heat). Sould retry with PLA.

I noticed this says no supports, but if you look at the file many parts of the shelf holder will be floating in the air if you do not use supports.

Has anyone made this? If so please tell me how you printed this. (With or w/o supports?)

The details tab says that a design goal was to be able to print this with minimal or no support. How are you orienting the drawers to do that?

Oct 11, 2016 - Modified Oct 11, 2016
O3D - in reply to echo465

Print the drawers with the handles on the ground plane. Supports should not be required to print the drawers since there are no complex or hanging features. The shelf may need supports though.
Edit: do not print as oriented, my CAD program is saving stl files on the wrong axis

If I scaled this 116% would the voronoi pattern still be rigid? Thanks

I'm sure it would. It might flex a little more but that's not a problem as long as you're not stacking stuff on top without the drawers in the shelf. The drawers help keep the shelf rigid.

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