Taulman Bridge feed problem (nylon)
I have been trying to work with Taulman bridge and have made some progress but hit a snag.
Using the Slic3r default settings I managed a small print with good adhesion using glue and a pretty print.
When I increased the size of the model (i.e. a bigger gear wheel in this case) it printed very nicely for a couple of hours then stopped feeding material. I increased the nozzle from 240 to 254 and it went a little longer but stopped feeding.
When I pull ht filament back out, it has buckled and appears to have found a blockage and stopped extruding.
Because this happens after a couple of hours is it possible that it is imperfections in the material?
To print for 2 hours plus then block is strange behaviour. I am used to prints finishing well once they get going.
So, anyone successfully printing with Taulman Bridge nylon? Any extra steps to take? I assumed lubrication of the filament was superfluous given nylon's characteristics but I am open to suggestions.
By the way the gears look great so far and I know they will do the job.
Thanks
Re: Taulman Bridge feed problem (nylon)
Update:
I have tried increasing temperature and playing with the tension on the idler.
I went to half speed (20mm ) and got to print for 3 hours (which is less than before in material).
I can unload filament, pull the mangled nylon out and load filament and it loads fine.
I have a retraction of 0.8 mm which was another line of thought (this is less than other people had issues with) so now I am stuck. I don't even know what to try next.
I understand if no one knows or has tried this and I appreciate people not chiming in with conjecture but at this point something else to try would be worth a shot.
cheers
Bob
Re: Taulman Bridge feed problem (nylon)
Update>
Still no joy so I shared the details with Taulman and they suspect dimensional issues. They are sending a new spool to see if this helps. Can't fault there response or the time it took. I'll post back when I know more.
Bob
Re: Taulman Bridge feed problem (nylon)
Thanks for the update Bob.
Looks like you're leading the field here...
Regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: Taulman Bridge feed problem (nylon)
Hi Bob
I have not tried Taulman bridge on the Prusa yet, but did some hours of printing on the Lulzbot Mini with it.
Bridge is a bit nervous with hot end temperature and pressure in the nozzle (feeding faster than the nozzle can let it out)
As I have a 0.5mm nozzle on the Mini this is a bit less of a problem.
Will see what the new roll will bring 😉
All the Best
Frank
Re: Taulman Bridge feed problem (nylon) SUCCESS!
The new roll arrived when I was on the road (hence the delay). I have finally been able to find the time to try it out - WOW ! Whata difference.
I am using the standard Prusa Slicr settings for bridge and it works a treat.
1) I pre-heat using the PET settings on my i3
2) I use elmers school glue on a clean plate.
3) I noticed it is safest to unload and reload the material before each print in case it has warped in the feed. Sometimes this is obviously not needed and other times it obviously is. I do it each time now.
Attached are some photo's of the print I was trying to make. The big one is a 4 hour print of a gear which is 11.5 cm in diameter. It has great teeth and is very strong with only 10% fill.
The discoloring on the image (btw) is where it has been deployed in the field where it performed admirably.
The smaller gear is a worm gear (hence the funky shape of the teeth). This was a one shot print and is a thing of beauty and a joy forever.
This is exactly what I had hoped for when I chose this material.