zaterdag 19 januari 2013

Hyena adapted filament feeder

Next -for the filament feeder -
I will test a reduction motor removing the big gear and Nema17
The reduction motor is similar priced as the Nema17 so worth a try.
This setup is now modified to take up the 8mm shaft Hyena
and uses the hollowed 608 bearing.



It does look rather complicated but its just a stack of fairly simple
cutup from 8mm trespa parts.
The backplate can be modified to several type of steppermotor mounts.
This way it can be adapted more easily to other available motors (in time).
Its a more convenient easy to adapt testbed.

Looking forward cutting the needed parts comming weekend.

More later.

dinsdag 15 januari 2013

Zoltrnot ready....!

The original hobbed bar / gear has been replaced for the "Hyena" hobbed bar from Arcol.hu
(
http://shop.arcol.hu/) that I did order some time ago.

http://www.zoltar-cnc.nl/media/forum/Hyena8mm09012012.MP4

Also did purchase the hollowed bearing what does not deform the filament.
This extra bearing is prob not needed as the hollow shape of the hobbed bar
takes care of the alignment well.

This 8mm Hyena has real good grip on the filament.
Even with the little spring - what worked insufficient with the first gear-
it does now show some great improvement.


Preparing the previous week for our meeting last weekend,
I figured nothing could fail now anymore....
Man I was wrong.

Murphy's LAW struck by lightning, although no blast ;D
A lot of stinky smoke indicated an electronics part did fail.
The heater that worked last time without any problem - died -
Pity, as there is no printed plastic product to show here now.



That was the end of this exercise, although electronics,
switches and display dialer & cardreader work well now.
Mechanics with a new ballbushing installed runs very smooth.

Next waiting for a new hotend resistor and Rik

will takeover further testing as the setup is now at his place.

-chris-

(http://www.zoltar-cnc.nl/forum/index.php?topic=25.300)