Problems with mk4 plastruder feeding
Patricia Dobson
I am from Towson University and we are trying to set up our first
Makerbot Cupcake CNC with Mk4 plastruder. We are having some
difficulty getting the plastruder to feed. When it does feed through
it creates notches on the filament, and whenever we move the machine
it stops feeding again. Should it be creating notches and it is that
delicate?
We have another issue when trying to run a test print of a .5 mm thin
walled box on the machine it never rises just tracks through the
plastic all on the same layer. We are using the newest version of
ReplicatorG with the integrated skeinforge. We selected the proper
driver but wanted to know if there is a problem with the z assembly or
do we need to edit the profile for the machine.
Thanks for any help.
-Trish
Joheinz
Can you move the z stage from the control panel? If not check the idc and stepper motor cables. Markus
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Owen M Collins
On May 18, 2011, at 6:15 PM, Patricia Dobson wrote:
> I am from Towson University and we are trying to set up our first
> Makerbot Cupcake CNC with Mk4 plastruder. We are having some
> difficulty getting the plastruder to feed. When it does feed through
> it creates notches on the filament, and whenever we move the machine
> it stops feeding again. Should it be creating notches and it is that
> delicate?
Do you mean the motor stops turning and the feeding of filament stops?
A loose connection could cause that problem.
Some people have found that idler wheel was too loose and it wouldn't consistently push the filament against the drive wheel.
>
> We have another issue when trying to run a test print of a .5 mm thin
> walled box on the machine it never rises just tracks through the
> plastic all on the same layer.
Check the connections like mentioned previously, or it could be the Potentiometer of the stepper driver is set too low.
It sounds like you're super close to get it going.
Fingers crossed for you,
O.
James McCracken
be deep and even. Likely, you haven't tightened down the idler wheel
enough.
The other issue sounds like your z-axis is bad. Go into the control
panel and press the Z up button - if your bot doesn't move, your
problem is somewhere between the motherboard and the motor. If the
motor turns but the platform doesn't raise, that's indicative of
binding somewhere - the rods can't turn because there's a physical
blockage somewhere (generally in new bots this is caused by the
not-quite-straight threaded rods it comes with)
Ross Mosshart
Out of curiosity, which drive gear are you using in your extruder? Is it an aluminum timing pully, or polished steel gear?
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MakerBot Space2
was finding the right temp to extrude at. If this is a MK4 with a MK4
Gear - Yes it will mash the ABS or PLA and add teeth, this is the
process by which it pushes the plastic through the extruder. There
should a be a adjustment rod you place in the extruder and tighten the
idler wheel with it in the extruder. You then remove the rod and it
should be at the correct distance. Moving a bot around tends to cause
issues for the wiring, check all your connections. Lastly if the Z -
up & down access is having problems - on a gen 3 stepper driver board
there is a blue pot that can be adjusted with a screw driver. It
might need to be turned up a bit to give the stepper more power.
Experiment with the control panel and the stepper driver board
connected to the Z access. Let us all know how it goes here in the
thread please.
Thanks
Brandon
AKA- MakerbotSpace