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I do not have an answer to your question, but there might be other issues with your approach:
- Overhanging edges tend to curl up, which causes the nozzle to bang into these curls, and which might knock the model off the glass.
- The support material might not stick very well to the steep slopes of the arches.
I think it might be worth trying vertical support columns and then a horizontal dummy bridge. Then you only need support material on top of that bridge, so it would consume even less support material. The bottom of that dummy bridge will of course sag, but that doesn't matter, since you throw that away anyway. On top of that support-bridge you could even make some dovetail slots, to make the support material stick well.
You could design all this manually, but I think there is an experimental feature from user smartavionics to do this automatically? Some time ago he was working on it, if I understood it well?
If Cura wouldn't let you remove the supports, an option would be to disable support totally, and design all the supports in your CAD file, and then assign them to the correct nozzles in Cura. This gives you total control.
See these pictures. They are from various different designs and tests, but you get the concept:
Edges of overhangs severely curling up, about 1.5mm, so the nozzle banged into these curls, which knocked the model off the glass and created a nice spaghetti.
Dummy support bridge, which is removed after printing. Here the support bridge is hanging from the walls of the real object, so it does not have its own legs. But for more stability or if you don't want to scar the real object, you could of course give the bridge its own legs.
Dovetail system for adding mechanical grip of the support material to the dummy bridge.
The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
So what’s new?
The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.
The UltiMaker S7 also includes quality of life improvements:
Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more
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Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.
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geert_2 553
I do not have an answer to your question, but there might be other issues with your approach:
- Overhanging edges tend to curl up, which causes the nozzle to bang into these curls, and which might knock the model off the glass.
- The support material might not stick very well to the steep slopes of the arches.
I think it might be worth trying vertical support columns and then a horizontal dummy bridge. Then you only need support material on top of that bridge, so it would consume even less support material. The bottom of that dummy bridge will of course sag, but that doesn't matter, since you throw that away anyway. On top of that support-bridge you could even make some dovetail slots, to make the support material stick well.
You could design all this manually, but I think there is an experimental feature from user smartavionics to do this automatically? Some time ago he was working on it, if I understood it well?
If Cura wouldn't let you remove the supports, an option would be to disable support totally, and design all the supports in your CAD file, and then assign them to the correct nozzles in Cura. This gives you total control.
See these pictures. They are from various different designs and tests, but you get the concept:
Edges of overhangs severely curling up, about 1.5mm, so the nozzle banged into these curls, which knocked the model off the glass and created a nice spaghetti.
Dummy support bridge, which is removed after printing. Here the support bridge is hanging from the walls of the real object, so it does not have its own legs. But for more stability or if you don't want to scar the real object, you could of course give the bridge its own legs.
Dovetail system for adding mechanical grip of the support material to the dummy bridge.
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