Dual Extrude etc

[highlea 1]

I have been working with second extruder to produce supports and notice some effects that may have been covered elsewhere, but bring them together here:

1) Extruders keep swapping even though above level of support and nothing to be printed by second head

2) Wipe tower is very fragile if materials do not bond well. Either have to build huge tower or it falls over before end of print

I see cut-out of unnecessary extruder swaps is planned for 'pink unicorn', but could we also have separate wipe towers for the two nozzles.

The Cube appears to use a mechanical wiper and priming bin. Can we have provision for this, or is it all covered by patents? This is the ideal solution and means we don't need a wipe tower.

 

[nallath 754]

Finding out if something is covered by patents is hard, because there are tons of them. Most of the patens are (intentionally!) vague, which increases the difficulty even more.

The cube does use the wiping and a priming bin, but the one that I saw in action did work well, but the material change took about 25-30(!!) seconds.