Ultimaker uses functional, analytical and tracking cookies. Tracking cookies enhance your experience on our website and may also collect your personal data outside of Ultimaker websites. If you agree with the use of tracking cookies, click “I agree, continue browsing”. You can withdraw your consent at any time. If you do not consent with the use of tracking cookies, click “Refuse”. You can find more information about cookies on our Privacy and Cookie Policy page.
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.
Are you a startup using 3D printing? Perhaps you should continue reading...
Together with BASF we are launching the Forward AM Innovation Award - the very first global contest for startups developing new applications with 3D printing!
Why apply?
The winning startup will receive €100,000 in goods and services*, along with coaching and marketing exposure from top-notch leaders in the industry.
Who can apply?
Your startup creates products using Additive Manufacturing, is less than 5 years old, and has less than 50 employees. We are looking for 3D printing applications with a strong focus on innovation, sustainability and scalability.
Dental aligners, shoes, tools, automotive parts, music instruments, industrial tooling and molding, medical implants, sports equipment, toys, architecture, fashion, construction... all are welcome to join!
Do you have an innovative, sustainable and scalable idea that leverages the unique possibilities of 3D printing? Then it is time to apply!
More information can be found here.
Applications close on March 28th, 2021
* What does "in goods and services" mean?
The winner will be able to pick any item from the overall product and service portfolio of the sponsors, e.g. printers, materials, consulting, software... Choose whatever you need to accelerate your startup.
Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.
They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access.
Ready? Register your product here in just 60 seconds.
Recommended Posts
geert_2 474
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.
Link to post
Share on other sites