Geeetech

You can use those nozzle : https://fr.aliexpress.com/item/33009261 ... 6c37waclMF

I use one of 0.6mm hardened steel since a year and it is working very well

Old topic but here are some very interresting informations.

Retraction on mixing extruder just do not work as expected, and this is the key of stringing problems.

Basically when one side/filament is retracted, it suck from the other side/filament rather than from the nozzle , that's why the ...

I printed them

Hi,

yes, I had to change the TMC2208 extruders mode via OTP for both extruders and everything goes right now and the extruders are still silent.

here :
https://www.amazon.fr/Accessoires-dimprimante-Aluminium-dextrudeur-Extruder/dp/B0837LQNQQ/ref=sr_1_3?__mk_fr_FR=%C3%85M%C3%85%C5%BD%C3%95%C3%91&keywords=dual+gear+extruder+aluminium&qid=1582929626&sr=8-3

or search for "dual gear extruders aluminium"

(be careful as some version are single ...

Les driver ceux sont les petites cartes (1cmx2cm environ) clipsé sur la carte mère, on peu les enlever et les remettre, ils sont juste "clipsés".

Une bonne chose à faire est de les remplacer par des TMC2208 qui sont bien plus silencieux http://www.geeetech.com/forum/viewtopic.php?t=62270

A ma ...

Another one breaked... have a look to this thing https://www.thingiverse.com/thing:3456879 , maybe be you can use your second extruder to print it.

It will probably break again as it have the same design issues (too thin parts)

Also, I will advice to simply replace both extruders with full metal one

Not surprising they all break... I have replaced mine with all metal (see attached picture), but you can give a try to this thing https://www.thingiverse.com/thing:3456879 , but I am pretty sure it will break too.

Here is a post to share my experience on bed surface.

After using adesive buildtak, then the geetech superplate (not really cheap...), I finally ended using a 4€ 26x26cm (3mm height) mirror and now the first layer is always perfect and the print detach by itslef when the mirror get cold ...

C'est aussi le cas avec Marlin 2, un seul extruder dans le menu, je vais regarder si il n'y a pas une option de compil...

Pour le moteur qui ne fonctionne pas il faudrait intervertir les drivers sur la carte mère pour vérifier qu'il n'y en ai pas un de grillé