i have a solid pink tpu for other parts but I need to dry it for a day.
The only thing I changed in the filament profile was the flow ration I bumped down to .98 from 1 to see if that would help with my blobbing on the 4th tire segment… So I deleted that filament profile and will do another single tire with the absolute stock bambu tpu 95a profile
This may be an unpopular opinion, but I print one tire at a time so the failure domain is only one. It means changing plates more frequently, but it makes me feel better.
I’m about to just do that.
Figuring maybe just buy an A1 bed slinger for all the TPU parts of these chairs since those seem to be pretty good.
Get 0.8 nozzle for tires.
I can use my .8 nozzle for the tires!?!?
Yes, I have been using it successfully for a long time. I posted profile in this thread TPU Tire Profile & Setup on Bambu A1
Straps printed, all layers fine and bonded.
I just have some bad blobbing where the nozzle jumped to the next part.
What is your infill % on those tires?
15%…which is what I believe to be the setting
10-4.
I’m just trying to see if I can help in any way… thinking…
Had me scared there for a minute.
I just changed my retraction from .8 to 1.2 and so far I’m seeing a cleaner print.
Printed one tire and it came out flawless. Now thing two to see how they come out
I need to figure out which setting will help stop the printer from a very brief pause as soon as its done with its layer or change it so that pause is in the infill not the wall.
as it prints the second part once it finishes the layer it pauses, maybe 1 second and then moves back to the first part. Most of the time this is on a show face so it makes a scar or blob.
Print came out significantly less hairy from the strands and much less blobbing but there’s still some tuning. Just need to figure out that pause situation.
I’m just starting my first build, but this is my approach as well after reading this forum and doing tests on my own. Someone here mentioned print by object instead of print by layer, so I’m printing two tires at a time still keeping the failures to only one tire and also eliminates stringing between the two. This may not be long term for me, but it’s getting me through this one.
Print by object was clutch to getting my straps to print well
Cushions are printing. The headrest cushion came out with a ton of zits. So I turn on “avoid walls” and the print simulation looks like that should fix it.
I want to reprint the front right wing as it looks like it lifted during printing so it’s not a smooth transition between pieces
My 3 year old daughter did a quick sit and test and she fits well. I will say the ride is a bit lumpy, is that normal because of the way the tires are built? I did 15% infill on the tires. The segment joints are pretty solid compared to the rest of the tire so it’s like wobbly because of that if it makes sense.
Redid the tires and I assembled the wheels per documentation but I noticed the two wheel halves tend to loosen up. Is this normal?
Probably good 1/16” gap from top to bottom.
I’ve seen some have a little extra play than others. Never have I felt like they were going to fall apart or anything. Usually once the 2 pins and then the bearings in the middle they are rock solid.
I had this happen on my last chair with the 4 part wheels. For me it wasn’t the wheel. They fit very snug after making sure there are no leftover support materials in any holes. The challenge is the tires themselves seemed to be just a tad to big in the Z axis. I’m doing a full calibration on my A1 right now.
I just assembled my first wheel last night and noticed the same thing. The gap doesn’t show on the inside of the wheel rims, but the outside it does. My tires have a little play in them, so that doesn’t seem to be the issue in my case.
