dinsdag 18 juni 2013

Zoltrbot back home....

Its been a while,.......

Changed the J-head to kind of hybrid with detachable nozzle.






































 


Did have a new trial over the weekend...

Previous test with the PLA did fail as the PLA got
desintergrated in the feedertube.
It was hard to get the remains out of the PTFE tube and hotend.
The domed nut makes it a lot easier I must say.

Anyhow,

Its moving....and plastic-ABS is getting out.
But no decent product printed yet.
I even ruined some of the settings Rik previously made.



For the calibration I could use real help getting the settings right

into the Arduino. Is there anyone in NL, Kampen region
willing to give me a hand on on this?
That would be much appreciated!

just contact me at:



____________________________________________________________



Next to that .... what I think a very interresting development:


http://www.indiegogo.com/projects/easy-reprap-electronics



http://www.youtube.com/watch?v=Cmlr97qLxYA

This is one of the first really decent& complete reprap electronics Ive seen so-far.
On the software side not much has changed but this is a superb improvement to the hardware.
compared to the previous cable salad situation we have with the Ramps.
>Support up to 3 extruders!
>Decent display
>Dialer & Cardreader to have it work stand alone
>All stepperdrivers

Lets make 3D printing more accessible
to the electronically less fortunate hobbyists............

Help Dirk to make this very nice piece of electronics available!

Act noW!  - 48 hours left

 

zondag 10 februari 2013

New feeder-design has ultimate grip with mini Hyena!

Got the New filament feeder with the Mini Hyena working now.
It does have a superb grip on the filament.
In the bottom I made an extra hole for eventual rasps getting off the filament.
So then there is no risk of clogging up in there.

The Hyena gear- lineup- with the filament & hollow bearing
is perfectly to adjust with the M3 Hex screw.
The extra supportbearing on the shafts-end, was a good choice.


Cant even tear an inserted filament out of the assembly anymore....


Rik are you ready to start callibrating and testing soon?
Hope these small steppers with reduction are up to the job.

-chris-

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)