Ghadeer

Hello fellow makers I was printing with TPU 95A the other day, and the print surface looked non-smooth with a bit of gaps between wall layers (see pic below). I used the built-in settings for TPU in Cura but I made few changes: Layer height: 0.15 mm Wall line count: 1mm Infill density: 10% Retraction minimum travel: 0.7 mm Print speed: 40 mm/s Layer adhesion: Brim Did anyone face this issue as well? what do you think the reason could be?

Hello fellow makers, Does anyone know how to remove the brim off a part made with TPU 95A? I can easily remove the brim from Nylon parts but when it comes to TPU 95A, it does not come off even with too much force. Sincerely, Ghadeer

alright. Thanks guys!

Hello all, This is away from 3D printing but I was wondering, will it be possible to melt the Ultimaker Nylon filament onto a bowl and cast it into a mold made out of silicon? I have seen videos of people making molds out of silicon and pour epoxy or urethane as a cast to make a part or a jewellery... So will molten Nylon work too since it hardens at room temperature?

Hello all I want to print using Ultimaker 3 extended Nylon. I followed the recommended settings for printing and bed temperature (260 C and 60 C) but the printer does not print in contineous lines, it prints like small dots (underextrusion?) see attached picture. Can anyone help me out with this?

Thank you CapableQuad for your answer. I am now more confident about the Nylon material. The gluing is also what concerns me, as i will be gluing the nylon to different material types such as wood and rubber.

Thank you geert for the elaborated answer. I agree with prototyping with available materials to see the stress concentrators, which will help me in refining my design. I have already ordered the nylon filament, so even if it didn't work, I am sure it will be useful for other projects. To answer your questions, the 3D Printed nylon piece is only used in a part of the wing rib (the flexing points) and not the whole rib frame. The rest of the rib will be mostly made out of wood (since the project targets miniature UAVs that dont need very strong wing). The rib will be covered with elastomeric skin (similar to Latex material), which is smooth and can stretch as the rib profile changes. The efficiency of the flexible rib wing is part of the investigation, but according to AFTI/F-111 mission adaptive flight wing program, it can increase range by 20-30% of a plane. It all comes down to how much weight the system adds, and if that additional weight will be compensated by performance increase. So it really depends on the design/materials the flexible wing consists of.

Hello Ultimaker Community! I am working on building a shape shifting airfoil for my university graduation project (See example here) and I am in the process of designing a corrugated section that will flex up and down to give the desired airfoil profile. I came up with a part (shown in attached pic). Where I expect it to be able to bend (not too much though) in the directions of arrows as shown. The material thickness is around 6 mm (into the page) with a height of 6 mm and total width of 30 mm. I am considering buying the Ultimaker Nylon filament, but I also want to get your opinions if you think this will work before I buy it. Sincerely, Ghadeer