- User Since
- Feb 6 2017, 3:06 PM (140 w, 4 d)
Wed, Oct 9
I think tc_receiver PP-MP0209 was meant to be 309. PP-MP0209 is a servo gear. @sarahv can you update that?
I think due to the belt path almost rubbing the standoff, we should stick with e3d's custom standoffs
Should be in the drawings now
This is the current design that also houses the z endstop switch. Our fallback will be just a little adapter piece that mounts to the endstop holes on the toolchanger
Tue, Oct 8
By shortening the door and cut out on the top plate, we can open the door and have it sit against the 60 degree face
Mon, Oct 7
The control panel sheet metal and acrylic cover have been updated with holes for 2 solenoids ^
https://www.mcmaster.com/1635A24 could work for our hinge
We also need to find hinges for the door, and punch holes in the top plate sheet metal for them
This has been implemented in the current design
Thu, Oct 3
these have 250 micron positional accuracy. I dont know if thats good enough for xy or not https://omronfs.omron.com/en_US/ecb/products/pdf/en-d2s.pdf
I think using 2x solenoids wired in parallel would be good for better rigidity when the door is locked
Wed, Oct 2
Tue, Oct 1
Hows that window @Greggb
I made the top plate 8mm thick the bottom plate 3.5 and the tc dock 3
nevermind thats 2.0
Mon, Sep 30
Would this require a counter bore on the bottom plate to allow the z extrusion to flex slightly?
How thick should we make it?
this can be run at 6V https://tinkersphere.com/motors-wheels/2817-mini-lock-style-solenoid.html
@marcio , I dont think its FW but do you have any ideas what it could be?
Thu, Sep 26
to clarify it is only in the notes that it says silver, the drawings for the silk screen location call out blue
@marcio is this something we can look at? It would help speed up calibration
Wed, Sep 25
This could also affect ESD
@robert next time you have a machine that does this, can you set it aside for r&d to investigate?
Wouldnt that mostly effect the left side and not the right/center?
One of the recorded z offsets is -0.33 and printed well with that offset
If we used the corner brackets from t slot, we can only use the 2 hole for the top not the four hole because of the belt
Tue, Sep 24
If we make the left standoffs 2mm longer we could accommodate the regular sized shoulder screw for the idler that is closest to the motor pulley (the idler in the picture without a screw). Also I think the custom standoffs are more than just not being able to find the correct lengths, the smaller OD also allows for a clear belt path
In addition to the printer knowing which toolhead it has after a power cycle, this is a stretch but the printer could also detect if there was a failed dock ie. if the magnet on the dock doesnt pull the toolhead close enough on the dock, the printer could try again until a successful dock, or move the toolchanger to the side of the partially docked toolhead and push it in
^this is implemented and needs to be reviewed
The dock have mounting holes for an endstop switch
Mon, Sep 23
For aligning the z rail to the extrusion:
Self aligning t nuts
671052 Zinc Plated Steel 30 M4 16mm 16mm 6mm 1.9mm 8mm
671068 Zinc Plated Steel 30 M4 16mm 11.6mm 4.6mm 1mm 7.9mm
I'm not sure what you're asking. The thermistor EL-TH0012 is supposed to have the old style termination. It gets plugged into a thermistor harness that acts as an adaptor from the old style terminations to the microfit 3.0 (look at AS-CB0066 for an example of the thermisotr harness)
We get the thermistor from E3d with that termination style. This was to make it one part number across all toolheads