Hot Pull Clean not doing anything

[Danbell 0]

I suspect I have a clogged BB Print Core on my Ultimaker 3 and I can't seem to get the Hot Pull cleaning method working no matter how much pressure I try or how long I leave it to heat up.

There is no extrusion of material and the print core won't load material.

Any advice?

[kmanstudios 1,120]

What material are you using for the hot pull? Are you also up for reaming it out with a needle? I have used an old airbrush needle when needed. Gotta be real careful with that or you can make the nozzle bore misshapen.

[Danbell 0]

Using Ultimaker PVA. My colleague suggested using a pin to try and clear it out but I wondered if there were something I should try first or something I'm missing with the Hot Pull technique?

Thanks

Dan

[peggyb 169]

recognise these? the clips inside garbage bags or small plastic bags for sandwiches etc.? Don't know if these are common in other countries... But they are perfect to unclog a nozzle, there are always plenty of them unused, and the metal strand inside is small enough to enter the nozzle and doesn't damage or break anything.

[kmanstudios 1,120]

Are those stiff enough to poke through solided up, cooked materials?

[peggyb 169]

if you hold it with pliers (no finger burn) close to the nozzle and shove in it bit by bit. It is soft, yes, but very available. For harder wire I use strands of a metal wire brush.

Edited April 27, 2017 by Guest