Posts: 169
Joined: Wed Jul 19, 2017 9:37 am

Re: extruder recommendation?

Thu Nov 30, 2017 9:46 am

jfkansas wrote:Like I said, proof is in the final part, quality and strength. I think you will find that a big mill doesn't like to move at the speeds that a 3d printer requires. Sure it can move fast, "Hobby" 3d printers can also, but there is a reason they typically move slower. Plastic takes time to cool, and the thicker the layers the longer it takes for the plastic to solidify before the next layer is put down. The faster you move means less time for the thicker plastic layers to cool.
If you've got a serious CNC shop with a big air compressor, you can fix that problem with a Hilsch vortex tube cooler. They take a lot of air, but you can direct serious "cold" very precisely. With an appropriate shroud to direct the cold air around the extruder, I bet you could ramp up the speed a lot.

Posts: 85
Joined: Wed Oct 01, 2014 2:12 am

Re: extruder recommendation?

Thu Nov 30, 2017 3:23 pm

You don't want to direct cold air into a hot chamber. This defeats the purpose of heating a chamber, for ABS anyway. PLA maybe, but warm air is better.

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