I am guessing you haven’t been able to get supports to work under the overhang?
I would be happy to try also if you wanted to send the STL.
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Something I’ve done with a similar situation is load the file into whatever cad program you use, and take the empty space under the trouble area and 3D print that shape with -.02mm on the outside. Then when I print the main object I put the “empty area prints” and hold them in place while the printer uses them as a support. I then slide them out at the end. I hope you understand what I mean.
ABS supports of the same material in S3D seem to break away easy for me. If you can manage it in HIPS even better.
Can you share a bit more info as to what all your settings in S3D look like? And specifically what kind of failure you’re getting with the overhang? It may come down to your support and bridging settings…
I do and that’s quite cleaver. Being a small, and 90-degree part I’m not sure it would work. Gotta remember that though, thanks!
I actually have been able to get the supports to work, and quite well. It is the ABS that then needs to print on top of the supports that is giving me the trouble. I have one print that was successful but dang W10 updated overnight and I hadn’t updated the selected profile in S3D. Ugh. Anyway, here are a few examples of what I’m running into:
I see what you are up against now.
How about if you make the support closer to the lip-under side and use dense supports for more coverage?
Thanks for the tip, that’s not a bad idea. Two things, your user name is funny, and that last comment is so true. I was just telling my wife last night that on initial glance it looks like just a basic, simple geometric shape - easy print. But dang, that tiny little overhang has really been a PITA! If the part were larger it would be a lot easier but as small as it is nightmare is right!
Thanks again.
I want to first thank everyone who responded to my post. Everyone had great suggestions and I really appreciate everyone taking the time to try helping me out. I think I’ve solved my printing issue and am posting it as a separate comment as opposed to a specific reply.
@ChrisX35 - Special thanks to you for your QIDI FFF that you had posted on Thingiverse (@TTB_Studios - I tried yours too but it seemed to be specific to the FF and didn’t work on my QIDI - seriously appreciate your sharing).
I used that ‘QIDI ABS’ profile to print a 3DBenchy to see how it would turn out. Came out pretty good so it was a known quantity. I figured I’d just modify that to add the HIPS to the left extruder and work my way back to using both materials.
What I decided to do instead was flip the part to a 45-degree angle and see if it would print that way. I used a brim because there was almost none of the part touching the build plate but it held the part down (also set the first layer width and height up to help stick). At 45-degrees it shouldn’t need any supports at all theoretically. I also had to rotate it 90-degrees so the ridges were facing the cooling fans otherwise the far side didn’t look so hot.
Below is a shot of the final result… Still need to do a little cleanup on the parts but they actually came out pretty good I think. Again, thank you to everyone who offered advice. I really appreciate your time.
The other great thing about ABS is how it can be glued to itself with just some acetone. You can print separate overhang and glue it into place later.