The Quantum Delta Printer

by bdring, published

The Quantum Delta Printer by bdring Apr 14, 2013
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This was done as a fun, group build at the Chicago Hackerspace, Pumping Station One. The goal was to make a super simple very small delta. It was more for the fun of the build than anything practical.

We used a stationary extruder and a moving build area because it actually made more sense at this size. The build area is about 100mm diameter and about 50mm tall.

To satisfy the people who said it looked upside down, we actually tried it upside down...it worked. See the video here.


There is a bolg post with all the details here and the complete source files are available.


Click view full size on the images because Thingiverse is cropping them in the preview window. On most screen it might actually be full size :-)

Update: I added some recent features.
1: Magnetic base. This makes it easier to get parts of the base.
2: I lazy susan filament feeder.
3: Some lighting.

Read about the upgrades here.


I have access to many types of printers and this little guy is making the best prints of all of them.

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@bdring , could you pleaaaaase supply a BOM , having a hard time figuring out what makerslide things i need

am i blind or is there no BOM available?

plz @bdring , could you make a BOM? i wanna clone this printer ....

i'm gonna email you

Can´t find it too...

I have some problems in finding the right diameter (radius) of the platforms for the makerslides to fit correctly. Does anyone can give me a clue (in metric system, if possible)?

nog3 - in reply to Coenna

With makerslide and using the openbuilds/bdring/inventables etc provided v-wheels, the wheel centres should be 64.5mm apart from memory.

Coenna - in reply to nog3

Thanks a lot!

Do you have a different source for the 3 platforms? I don't have access to a laser cutter yet, so I will make them out of wood. I have everything else tho, and just finished printing out all the parts. Thanks!

I am also interested in a set of the platforms as I have no access to a laser cutter yet!

I added a few updates. Filament feeder...Removable build platform...LED lighting.

Shut Up and Take My Money :D

The source files are here and there is a link to the STEP file in the blog post. Ideally you want the lighter half of the part/extruder pair on the end effector.

I think this gets a little extra margin because of the "no bowden". I would feel safe going up to about 180-200mm diameter. I think tall skinny parts might be an issue, but who knows. The parts kind of self cool too :-)

No source files?
The flying table is nice, but doesn't it limit the size of the build platform?

Get on Kickstarter and sell this immediately before someone else does

How did you deal with the eccentric spacers pushing up against (and deforming) plastic? I thought I had seen comments from the folks that 3d printed ord variants that this was problematic.

I used printed carriages on my larger Delta ORD bot. That uses regular eccentric spacers. I printed with thick walls of 3-4 perimeters and a about 30% in fill. That has been running fine for months.

This design presented extra challenges with the self imposed overall size limitations. Regular eccentric spacers would have pushed the carriages too close to the center, so I used eccentric nuts on the other side. This did not work as well and some of the adjustable wheels are not perfectly square to the track. They work fine, but will may wear over time.

I have designed a few specialty spacers for use with printed carriages. They have a larger flange and a deeper round, boss part. The large flange will spread the load and the deeper boss will also resist angling. I have two designs. One is the same height as the standard spacer and one is a much lower height of 2mm for designs like this. Getting the wheel as close to the carriage helps. You will need a thin wrench to adjust them, but I am hoping a laser cut acrylic one would work.

The pulley is attached to a tapped hole in the MakerSlide. The belt is tensioned by moving the motor.

Stunning as usual! ;-) Quick one - did you just drill and tap a hole for the pulley?