oozeBot Elevate

T3P3Tony · 30 Oct 2020, 20:37

yeah really nice!

oozeBot · 30 Oct 2020, 21:20

Timelapse of the Cthulhu build.. You'll see the mid-air printing near the base as well as the stringing that we mostly got under control by about mid-way through the print.

https://vimeo.com/473997293

doublec4 · 31 Oct 2020, 04:42

Been following on instagram for a while now. Once this thing gets released I'm going to convince my work place to get one. We currently do not have a printer for ABS and this looks like it puts out great prints.

oozeBot · 31 Oct 2020, 13:41

@doublec4 Fun fact - we don't even own any PLA or PETG! When I got into 3DP years back, I decided to go straight to ABS. But that will have to change soon for testing purposes..

The ele^gant is the accumulation of everything we learned and yearned for over the years.. and we are finally close to making our vision a reality, but are about to go heads down on one last round of significant changes before calling version 1.0 complete. I'm excited to show what we have in store! We'll be starting the build of our final prototype within the next few weeks.

Veti · 31 Oct 2020, 14:03

@oozeBot said in oozeBot ele^gant:

we don't even own any PLA or PETG!

what about asa?

oozeBot · 31 Oct 2020, 14:21

@Veti Yes - we've been using ASA lately, but not for our printer parts. It behaves extremely similar to ABS with a much higher UV resistance. Anything I print for outdoor use is in ASA. I've also had good luck with ABS outdoors with a top coat of clear UV spray paint, but ASA makes that step unnecessary..

I'm a big fan of a thin coat of ABS slurry over a PEI sheet on our build plate. ASA sticks just as good as ABS using it, which makes it even easier. Plus you can finish the parts in an acetone vapor bath just the same as ABS.

Our go-to ABS is made by IC3D. They are finally making the move into ASA. We've received samples, but will be exploring using it more once it's generally available.

oozeBot · 12 Dec 2020, 15:21

If you've followed along, our design uses a belt driven z-axis. Early designs incorporated a relay bank to act as a pseudo-brake. It worked, but not 100% and the concern for shorting out the Duet was significant.

So to resolve the issue once and for all, we worked with LDO to add an electromagnetic brake to our z-axis steppers. The samples just arrived this week and I finally had time to install them on a prototype. They work great! If Z is dropping at all when power is cut, I have not found a way to measure it.

Outside of our upcoming kits, these will be available in our parts store once it launches next year.

Haggan90 · 14 Jan 2021, 12:27

@oozeBot said in oozeBot ele^gant:

If you've followed along, our design uses a belt driven z-axis. Early designs incorporated a relay bank to act as a pseudo-brake. It worked, but not 100% and the concern for shorting out the Duet was significant.

So to resolve the issue once and for all, we worked with LDO to add an electromagnetic brake to our z-axis steppers. The samples just arrived this week and I finally had time to install them on a prototype. They work great! If Z is dropping at all when power is cut, I have not found a way to measure it.

Outside of our upcoming kits, these will be available in our parts store once it launches next year.

I would love to buy 3 of those! Where can I find them?

oozeBot · 14 Jan 2021, 13:07

@Haggan90 We may be the only ones out there with this design as I worked with LDO on the specs for it. Testing is near complete and we will be placing an order soon. This will be something we stock in our parts store as soon as it launches.

And FYI, they work great!

Haggan90 · 14 Jan 2021, 14:30

@oozeBot Ok!
I have a belt driven Z-axis as well, and a break like this would be great to have!

DaBit · 14 Jan 2021, 22:39

Another ABS/ASA fan here: really nice ABS prints!
You don't use chamber heating, right?

I might want to try that IC3D stuff too, so far I am unable to complete prints the size of your Ctulhu without layer splitting in either Prusament or Formfutura ASA or eSun ABS. in my enclosed printer.

oozeBot · 15 Jan 2021, 00:49

@DaBit said in oozeBot ele^gant:

You don't use chamber heating, right?

Yes, our printers are all enclosed with chamber heaters. For ABS, we set the chamber temperature to 60c and never have delamination issues. The Cthulhu was a hard one as we really pushed the printer with a 1.2mm nozzle and 1.8mm extrusion width..

We are in process of printing the first parts for our release candidates. I'll be posting much more about them soon as they are considerably different than our prototypes. Here is one of the first parts off the printer! In ABS of course..

fcwilt · 15 Jan 2021, 00:59

@oozeBot said in oozeBot ele^gant:

@Haggan90 We may be the only ones out there with this design as I worked with LDO on the specs for it. Testing is near complete and we will be placing an order soon. This will be something we stock in our parts store as soon as it launches.

And FYI, they work great!

Interesting.

On my recent belted Z axes conversion of my Mark Forged style printer I used three Z steppers with integral 5-to-1 planetary gear boxes.

The bed stays put when power is cut. It doesn't seem to need any sort of brakes.

Frederick

oozeBot · 15 Jan 2021, 01:13

@fcwilt we briefly evaluated geared steppers but went a different direction. With our solution, we were able to move the z-axis much faster than with a geared stepper allowing for considerably faster z-hops, etc.

fcwilt · 15 Jan 2021, 01:30

@oozeBot said in oozeBot ele^gant:

@fcwilt we briefly evaluated geared steppers but went a different direction. With our solution, we were able to move the z-axis much faster than with a geared stepper allowing for considerably faster z-hops, etc.

Interesting.

I have no problem moving the bed at the needed speeds.

But I see you appear to be moving the entire XY gantry - curious.

Are you seeing any Z belt stretch as the center of mass of the gantry moves?

Frederick

oozeBot · 15 Jan 2021, 01:38

@fcwilt We use 9mm fiberglass reinforced Gates 2GT belts and have not experienced any stretch or degraded performance throughout the gantry’s range of motion- and we have really been pushing our prototypes hard.

fcwilt · 15 Jan 2021, 01:42

@oozeBot said in oozeBot ele^gant:

@fcwilt We use 9mm fiberglass reinforced Gates 2GT belts and have not experienced any stretch or degraded performance throughout the gantry’s range of motion- and we have really been pushing our prototypes hard.

Thanks for the info.

Frederick

oozeBot · 2 Feb 2021, 18:33

We've been heads down for awhile now wrapping up the design for our release candidate.. and finally have something to show - our new gantry! It has been completely redesigned to be smaller, lighter, and stiffer than the prototypes.

We are in love! Check out the belt work..

fcwilt · 2 Feb 2021, 19:36

@oozeBot said in oozeBot ele^gant:

We are in love! Check out the belt work..

What is the rational for the idler nearest the stepper? The belt leaving the stepper could have run straight to a tensioner positioned closer to the stepper.

Thanks.

Frederick

Stephen6309 · 2 Feb 2021, 19:42

@fcwilt If that idler is removed, the belt would only wrap half of the pulley and the belt could slip.