Typical standard modeling resins tend to be pretty brittle, yes. Formlabs Tough is one of our specially formulated engineering resins. It has many similar qualities to ABS.
https://support.formlabs.com/s/article/Using-Tough-Resin?language=en_US
1 Like
Although that looks amazing the specs say it is not recommended for rigid parts and it has a much bigger elongation than ABS.
And even this is the reason we tend to use PLA I think.
But I’m very curious to see how it will work once you finished building your MPCNC.
1 Like
Yeah, the properties are similar, but not the same as ABS. Fully aware it’s not the ideal material for this application and don’t expect it to last forever.
Making it for fun in the name of science and out of curiosity to test the limits of the material because I have unlimited access. My expertise is with the biocompatible resins and dental applications, just having fun messing around with the engineering resins. Ill definitely be posting updates as more progress is completed.
Oh that is begging for some tiny leds to light up the parts. Super cool experiment, I would love to give it a wiggle to see how it feels. Shoot just build it small and it will be fine! 8"x8"x2" work area, maybe 10"x10" even.
Congrats on a cool new job!
1 Like
I believe the reason this is the case is because Ryan has not tested it and he doesn’t want someone to waste hundreds of dollars on resin. I can say from experience, the tough resin is a lot different from the typical photosensitive modeling resins that are common on the market for printers like the Moai, Anycubic photon, etc. It is more comparable to an engineering resin like Siraya Blu.
pyuri, how did you print them? are they solid? do they roll well on the tube or is there a lot of tension?
Damn, you’re right. I’m definitely doing that! It feels SOLID and the tolerances are on point! That said, the material does slowly creep over time and I expect those corner mounts to be the first to go. If you’re ever in the MA/NH area, feel free to come check it out. Otherwise, I’d be more than happy to print you parts in any FL resins for R&D, experiments, or just for shits.
Thank you!
Awesome thanks. Lets see how that works first.
The corners see such a tiny load I don’t see how they could go bad. You don’t need to tighten the screws very much at all, no need to stop the tubes from rotating even, most of mine only have 2 out of 4 screws in them. That is also why I can’t believe there are so many big giant corners, of all the parts I am the least worried about them.
Yeah, I agree it’s not worth it to spend $1000 printing these parts just to watch how they break down. Luckily, I didn’t! My interest here is learning about the limits of the Tough material (and eventually all the other resins) while learning & building this amazing machine and sharing my journey along the way. I included a link with more information on Formlabs Tough material above. It’s one of the specially formulated engineering resins designed to simulate widely used prototyping/production materials.
Yes, they were printed solid. Resin prints are generally not sliced with infill. Close to 6 liters of resin and over 200 hours total printing time. The tolerances and offsets are SPOT ON. The parts roll very smoothly. I will post some videos of movement after our next build session.
That’s good to know. I shared the project with some users on the Voron forum and someone said they expected those corner mounts to go bad first. I thought it made sense, but I’m glad I mentioned it now. So, what parts do take the most wear?
From my experience, the motor mounts. But I still have the first or second gen mounts. I still haven’t bothered to upgrade them. Maybe the next time the break.
I know no infill but I sometimes hollow parts out. I was curious how the parts would work being solid since they’re designed to flex, but I guess the lower elastic modulus of the tough resin works out in favor of that. (roughly half that of PLA it seems?) Nice to hear it is running good!
Ah okay, wasn’t sure what you meant. Thanks, I’m excited to get it up and running asap!
1 Like
How did this turn out?
6 Likes
Hey guys please ignore if you don’t like post bumps, but I can’t help reviving it, because it’s so interesting.
Now in 2023 (3 and a half years later) , I hope there my be some developments that make Resin printing viable for CNC builds.
Printer prices have come down and build volumes have are now large enough in low cost printers like the Elegoo Saturn 4K.
Resin is now far cheaper too.
Some claims have been made that the strength is similar to ABS. Has anyone got any recent data or new resin experience? I remember trying to get the V1 Engineering logo to print in my Arduino RAMPs enclosure with my 4mm nozzle and the quality was bad, even missing one of the letters in “Engineering” entirely, much to my disappointment --but look now: the print quality of resin is just amazing. Here’s hoping we get some superior “engineering” resin to play with!
I honestly did not like the Prussa blue stuff. Way over priced and printed like complete garbage compared to even water wash elegoo.
My resin printer has its uses but I don’t think this would be one of them.
Are you maybe just trying to fdm print too fast or too coarse maybe ?
Thanks Travis
I don’t think it was the layer height (0.3mm), it’s just that fonts have more detail than is immediately apparent and when they went through the slicer (Cura) some of the thin lines where ignored.
I’m hoping the resin technology improves.
1 Like
We just need cheap sls machines.
1 Like
Me too the resin printers are a lot of fun.
I wanted to try the ceramic stuff but never got the chance yet.
Give the economies a few more years and I’m sure you’ll be able to afford your own blacksmith. As a patron, of course, I wouldn’t dare imply chattel slavery.