Oct 10 2019
Oct 8 2019
The thermistor circuit might be the only one in the harness that could be checked. This means that this fix would depend on the user forgetting all the y axis connectors, or none of them.
Oct 2 2019
Sep 30 2019
Sep 27 2019
Silver on the bed plate works for our purposes IMO at least for the first production batch. The main issue with the case is resolved with 722072e2de928dfe17059811497ff4c93678044d
I think these are visible enough for this to qualify as a minor issue an not a critical one. @tutley can you make an update to the drawing to make it say blue and push it to the T10224 branch as needed?
Lighting isn't great I realize.
Incidentally we are using silver silk on the bed plates, which means we are using two different types of silkscreen for these parts. The supplier pointed that out, not sure if it matters or if it was intentional or what, just something of note.
Sep 26 2019
Sep 25 2019
We had a discussion regarding this issue during the MER meeting today and the consensus is that we should update the drawing to reflect what the supplier claims they can meet since using these parts does not cause any issues in the testing we have done.
Sep 24 2019
Alright, I messaged the supplier and the updated drawing is in master.
Ok thanks for reviewing that. I will contact the supplier and provide the updated drawing.
We received a shipment today and they fulfilled the request to stack the pallet front to front and back to back. They also included a piece of cardboard in between the standoffs from adjacent cases.
@tutley I created a rev E which has the anodizing callout removed. Can you review and merge this if it looks right?
Sep 23 2019
Sep 20 2019
Sep 19 2019
Here are the forms.
Sep 18 2019
In the short term, I recommend lowering the currents back to 175 for X and Y. This is low risk because this is a very similar system to TAZ 6 and we have lots of testing on TAZ 6.
What has me scratching my head is that if we know they are a common failure point, and we know that heat is a major contributing factor, why would we increase the driving current (and resulting heat)? Sometimes, increasing the current makes sense, when you are seeing skipped steps and you stay far enough below the maximum operating temperature in the steady state that you aren't risking burning the motor driver out, but I don't think we have been seeing skipped steps, at least, not ones that can be attributed to too-low drive current, and we have been seeing heat related driver failure.
Workhorse stepper driver current settings: https://code.alephobjects.com/diffusion/MARLIN/browse/devel/config/examples/AlephObjects/Redgum_TAZWorkhorse/Goldenrod_HardenedExtruder/Configuration_adv.h$795
Sep 16 2019
@Steven yes this is for the EOL diode issue. I think maybe the reason both were left in is because either one would work, just depends on if the diode was available from the OE supplier. It is removed on the T10047 branch but it is yet to be merged in.
Sep 13 2019
@stanback can you upload the completed FAI form here for the insulfab covers please?
Other thing to keep in mind is that the part that we are mounting this to will have some variance in the location of the holes.
Sep 12 2019
Note: all inspection forms are kept in the firstarticleinspection repo which you can git clone, or download directly from code.alephobjects.com by clicking on the part number, clicking on the odt file, clicking on "raw file" and then clicking "download file".
Measure the dimensions on the inspection form.
@west could you review and merge this if it looks right?
Ok cool. Based on what you see there, I am comfortable proceeding with the parts made with the new tool.
Sep 11 2019
@tomc please coordinate the recording of the measurements of the above inspection form.
@tomc please coordinate the recording of the measurements on the above inspection form.
I think these were built to the revB drawing since revA lists black HIPS as the material. Unless I hear otherwise, I'm going to make the annotated drawing and inspection form to revB
@tutley I went ahead and updated the drawing to reflect the manufacturer recommended tolerance on a housing hole tolerance. It is currently pushed to branch T9479. If it looks right, you can merge it in as far as I am concerned.