Mechanical parts - Layer adhesion - Filament
Hello,
I have to make some mechanical parts for a small Land Yacht. They have to survive sunny hot days, and some mechanical stress. The first attemps I made with PLA proved the idea OK, but PLA not really suitable: changed shape over time and heat, and broke at some points between layers.
I try to take stress into account for the part design, but I can't avoid some stress across the layers.
Which filament would you advise for this application, from layer adhesion perspective to achieve best mechanical resistance across the layers? PTEG ? PC Blend ? Other ?
Last, would annealing help in my case ?
I have seen the Carbon PC Blend, but I would like to avoid specific nozzle, and I believe that carbon will not change the layers adhesion aspect.
Best regards,
JMF
PLA is ideal for first prototypes and design evaluation. It's also one of the stiffest filaments and is surprisingly durable in suitable environments.
I try to take stress into account for the part design, but I can't avoid some stress across the layers.
You can orient the part on the bed to take account of anticipated loads or to vector some stresses across layers if necessary.
Which filament would you advise for this application, from layer adhesion perspective to achieve best mechanical resistance across the layers? PTEG ? PC Blend ? Other ?
Flex (eg TPU) has excellent interlayer adhesion but of course it's flexible...
Nylon, polycarbonate and PET all have differing degrees of toughness/resilience and would fare better outdoors than PLA. I would probably experiment with PETG first, mainly because it's the easiest to print and is cheap.
Last, would annealing help in my case ?
Possibly. It will strengthen the part but you can expect shrinkage; some simple shapes can be calibrated to take account of it but complex parts may distort too much.
Cheerio,
Start with PETG
Thank you for your feedback Diem,
I will start with PETG, if it looks as a good candidate.
Best regards,
JMF
RE: Mechanical parts - Layer adhesion - Filament
Asa is made for outside, check this one.
Nylon should be better, but check what happens if it is outside in the sun and water.
check PP is a strong filament, outside I do not know.
In general prints for outside, by black , no sunlight reaches the inside, and a few layers of paint to protect.
For all filament, make a temperature tower, and then print 10 degrees higher, so the lines stick better.
CPE you could check, at work they print these for building cars, the plastic part is for pushing between parts to get it loose again, petg was not good enough.
Printing a Boat with EVERY FILAMENT
And a german guy on youtube has a few movies on the strenght of filament.
RE: Mechanical parts - Layer adhesion - Filament
CNC Kitchen is the German guy.
Review
Asa is made for outside, check this one.
Nylon should be better, but check what happens if it is outside in the sun and water.
check PP is a strong filament, outside I do not know.
In general prints for outside, by black , no sunlight reaches the inside, and a few layers of paint to protect.
For all filament, make a temperature tower, and then print 10 degrees higher, so the lines stick better.
CPE you could check, at work they print these for building cars, the plastic part is for pushing between parts to get it loose again, petg was not good enough.
Printing a Boat with EVERY FILAMENT
And a german guy on youtube has a few movies on the strenght of filament.
Great post and thank you for sharing. I was considering that option and found this post so changed my opinion.