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Quiver Drop Test
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Description

Drop Test Printer Serial Number: Quiver20

Here are several pictures done on the last Friday of 2018. For the most part the printer seemed to passed except for a few important details of note.



A few of the retaining rings came out with their respective bushings. In this case one on the x-axis and another on the z.



The printer was able to move around causing some damage to the box from the electronic chassis and the filament sensor.


The screw on the filament sensor was slightly bend due to hitting the side of the box a few times.


There was some speculation that the y-cable chain mount may have been damaged but we are unable to prove whether it was from the drop test.

Event Timeline

oliver created this task.Jan 2 2019, 7:33 AM
oliver triaged this task as Normal priority.
oliver created this object with edit policy "LulzBot Hardware Products (Project)".
oliver renamed this task from TAZ 7 Quicer Drop Test to TAZ 7 Quiver Drop Test.
west added a comment.Jan 2 2019, 7:39 AM

@oliver have you removed the filament sensor screw to see if it is bent? It could just be a slightly crooked insert. Can we also get a better picture of the Y chain mount? I cant really see whats going on

oliver added a comment.Jan 2 2019, 8:15 AM

@west I just reassembled the printer and noticed that the y-cable chain mount is fine. Either it was never fully tightened to what it should be or it just came loose in the box. After taking out the screw, I can confirm that is was slightly bent, running some calibration on the machine now to test if anything else may be wrong.

west added a comment.Jan 2 2019, 8:38 AM

The bushings coming out is odd. I could increase the OD of the retaining rings so that it holds in the channel better

Here are some pictures of the first print after the drop tests:

west added a comment.Jan 2 2019, 10:43 AM

@oliver do you have a print from before the drop test to compare?

@west Unfortunately I do not. Though I can confirm that the lines you are seeing in the print are due to the printer printing 2 layers before switching over to the other color. As well I did perform a nozzle calibration on this printer before sending the print job. Z offset was left unchanged.

oliver updated the task description. (Show Details)Jan 2 2019, 3:29 PM
tutley added a comment.Jan 3 2019, 8:14 AM

For the bushings popping out, i think we need to address how the retaining ring sits in the groove. Currently the chamfer on the retaining ring is facing outward and that means there isn't much resistance before the ring pops out as the chamfer helps guide it out.

west added a comment.Jan 3 2019, 8:16 AM

For the x carriage bushing, at least on my printer the retaining ring spins fairly easily. I think the OD of the 12mm rings could be increased

Steven closed this task as Invalid.Jan 14 2019, 1:31 PM

The issues associated with this are being worked in other tickets, T5088 and T5071, and a new rev of the packaging materials is in process. Closing this out as there is nothing specifically actionable in this ticket.

MikeR added a subscriber: MikeR.Jan 17 2019, 12:16 PM

We did a second drop test and here are the results.

MikeR reopened this task as Open.Jan 17 2019, 12:16 PM
west added a comment.Jan 17 2019, 12:19 PM

@MikeR were the bottom 10mm bushing retaining rings rotated 180 degrees so they sit better in the pocket?

180 degrees from where?

west added a comment.Jan 17 2019, 12:23 PM

about the y or x
See the image i posted in T5088

kent renamed this task from TAZ 7 Quiver Drop Test to Quiver Drop Test.Feb 13 2019, 12:22 PM
kent added a comment.Feb 13 2019, 1:25 PM

We did another drop test with Quiver 7. This had all the beta parts installed and was verified by @west before the drop to make sure all parts were installed as intended.

A few notes:

The foam near the z-left motor could use more clearance near the wires:

Left side:

Right side:

The cable channel on the right side cracked near the back near where it bolts to the motor

The x-idler was cracked near where nut for the x-idler bolt goes.

The x-axis was racked and you can see that the toolhead is pressing into the inner foam between the toolhead and the bed:

The additional cardboard insert seems to be making the box bulge and the tape split during the drop test:


The bottom retaining ring on the x-motor came partially unseated but did not come out completely.

The new 2 inch foam with additional crossmembers in the corners did a good job of keeping the printer from coming into contact with the inside of the box, as we had seen with the previous drop test. This is what it looks like before the drop:

MikeR added a comment.Mar 5 2019, 4:03 PM

Just did another round of drop testing.

DaniAO closed this task as Resolved.Mar 20 2019, 8:29 AM
DaniAO claimed this task.

Packaging has been confirmed. Going to close this one out .