kent (Kent Johnson)Administrator
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Projects (16)

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User Since
Jun 9 2015, 10:48 PM (182 w, 6 d)
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Recent Activity

Yesterday

kent triaged T4864: Left side extruder cable clip hits x motor mount before reaching home position as Normal priority.
Mon, Dec 10, 2:21 PM · Quiver
kent added a comment to T4862: Fans prone to getting things in them.

@tutley yeah we could. I think there may be a number of designs that are available and freely licenced. I don't see it as something that absolutely needs to happen, but it was something that I noticed so I made a ticket for it, mostly for logging purposes. It's pretty frequent that months and months after the release of a product, someone will point out an issue that was already thought about and determined not to do anything about. In situations like that it might seem like negligence. This way, we can look back and remind ourselves exactly why we decided not to do anything. Not doing anything is a valid thing to do in some cases, including this one I think.

Mon, Dec 10, 2:02 PM · Quiver
kent closed T4862: Fans prone to getting things in them as Wontfix.

This is the case with any heatsink fan. If we covered the fan, it could reduce airflow going to the heatsink and require another printed part that would be cosmetic heavy

Mon, Dec 10, 12:46 PM · Quiver
kent changed the edit policy for T4862: Fans prone to getting things in them.
Mon, Dec 10, 11:45 AM · Quiver
kent reopened T3431: Find more reliable and manufacturable thermistor connector solution. as "Open".
Mon, Dec 10, 11:30 AM · Quiver
kent added a comment to T4807: Y-axis single bearing holders.

Yeah we can do that. To determine which version we ship on the Alphas, we need to decide if the tight axis due to the deformation of the y-bearing is a critical design failure. If it is, we have to change it to the new version for the alpha builds. If it is not, we ship it with the alpha version of that part.

Mon, Dec 10, 10:40 AM · Quiver
kent added a comment to T4841: Make frame feet round instead of square.

Other thing I've noticed in the same vein is that if you move the printer across a desk and bump one of the feet, it will come out of alignment even if it was in alignment to begin with.

Mon, Dec 10, 10:35 AM · Quiver
kent added a comment to T4847: x-belt rubbing on tensioner.

Wait... no to what?

Mon, Dec 10, 10:31 AM · Quiver
kent added a comment to T4821: Y-Axis idler Socket.

@west I'm confused by the phrasing of the question. Are you asking if it is possible, or requesting that I print these for you?

Mon, Dec 10, 10:17 AM · Quiver
kent added a comment to T4502: Mask all the threaded holes on the bedplate..

this changed would actually be painful

Mon, Dec 10, 8:59 AM · Quiver

Fri, Dec 7

kent added a comment to T4847: x-belt rubbing on tensioner.

It also seems to be rubbing on the front of the idler. I think it is because the Idler bolt is not sitting straight in the idler. @west is there some means for adjustment or something to check for if this is happening?

Fri, Dec 7, 1:24 PM · Quiver
kent triaged T4852: M5x10 bhcs does not thread into t nut on lower hole of y chain pivot mount as Normal priority.
Fri, Dec 7, 10:50 AM · Quiver
kent triaged T4851: Zip tie doesn't go though x -motor mount lower zip tie hole easily. as Normal priority.
Fri, Dec 7, 10:34 AM · Quiver
kent created T4847: x-belt rubbing on tensioner.
Fri, Dec 7, 9:11 AM · Quiver

Thu, Dec 6

kent updated subscribers of T4831: Screws in LCD case don't line up.
Thu, Dec 6, 2:23 PM · Mini-Hibiscus
kent changed the edit policy for T4841: Make frame feet round instead of square.
Thu, Dec 6, 12:35 PM · Quiver
kent triaged T4841: Make frame feet round instead of square as Normal priority.
Thu, Dec 6, 12:35 PM · Quiver

Wed, Dec 5

kent triaged T4831: Screws in LCD case don't line up as Normal priority.
Wed, Dec 5, 3:41 PM · Mini-Hibiscus
kent triaged T4820: Filament sensor bearing mount PP-GP0418 thoughts on redesign as Normal priority.
Wed, Dec 5, 7:38 AM · Quiver

Tue, Dec 4

kent added a comment to T4418: Idler misalignment.

@tutley, yeah on the m3 screw between the idler and the printed part. I've been putting them on the side towards the back because that helps prevent issues like T4419.

Tue, Dec 4, 3:18 PM · Yellowfin
kent lowered the priority of T3607: Half frame assembly jig from High to Normal.
Tue, Dec 4, 3:13 PM · Quiver

Mon, Dec 3

kent raised the priority of T3607: Half frame assembly jig from Normal to High.

I realized that there is an issue with the frame fixture design that makes it so the top extrusions will not be flush with the tops of the left and right extrusions.

Mon, Dec 3, 1:25 PM · Quiver
kent closed T4746: Change cable drawing to have correct part number as Resolved.

Ok I reviewed the changes, merged them to master, and removed the branch.

Mon, Dec 3, 10:20 AM · Quiver
kent committed rTAZQUIVER32d9b55bc456: Merge branch 'master' into T4746 (authored by kent).
Merge branch 'master' into T4746
Mon, Dec 3, 10:16 AM
kent triaged T4777: Missing one post install t nut on BOM as Normal priority.
Mon, Dec 3, 8:58 AM · Quiver
kent added a comment to T4418: Idler misalignment.

Steps 10 and 11 should be updated here to add a washer, I think this will solve this issue. https://ohai.lulzbot.com/project/dual-extruder-v3/hot-end-tool-head-assembly/

Mon, Dec 3, 8:48 AM · Yellowfin

Fri, Nov 30

kent committed rTAZQUIVER6c47f38d76bd: Merge branch 'master' into T3537 (authored by kent).
Merge branch 'master' into T3537
Fri, Nov 30, 8:59 AM

Thu, Nov 29

kent added a comment to T4504: Create inspection plan.

One thing we need to make sure to check is that the steel idlers are threaded thru all the way and that the threads are co-helical.

Thu, Nov 29, 3:12 PM · Quiver
kent assigned T4750: PP-MP0229 Increase hole radius for screwdriver to Steven.
Thu, Nov 29, 1:04 PM · Quiver
kent added a comment to T3205: Quiver Packaging Redesign.

Ok I just spoke with the designer he is using alibre design expert (whatever that is) and it was not opening certain parts of the assemblies for some reason. I recommended FreeCAD, which he installed, and is now able to open the .step files using that. I showed him how to measure distances in the part workbench, and walked him though some of the concerning parts. He did point out that the y-cable chain parts were not in the step nor was any of the filament runout sensor. If possible, I would like to send him files with those two added, but I told him he might just have to work from the photos and the physical model at first.

Thu, Nov 29, 11:22 AM · Quiver

Wed, Nov 28

kent added a comment to T4651: BoM missing harness pn.

@west right, that's true. What I think I'm seeing is that the changes made in this branch don't add the 35 and 36, they add the 36 and 37 which is not what we want.

Wed, Nov 28, 4:33 PM · Quiver
kent closed T4635: Move EL-HR0158 and EL-HR0159 connectors and cables to EL-HR0160 and EL-HR0161 harnesses as Resolved.

OK, I merged this in and deleted the branch.

Wed, Nov 28, 4:23 PM · Quiver
kent added a comment to T4635: Move EL-HR0158 and EL-HR0159 connectors and cables to EL-HR0160 and EL-HR0161 harnesses.

@west ok in that case, I think we are good to merge it.

Wed, Nov 28, 4:15 PM · Quiver
kent reassigned T4651: BoM missing harness pn from kent to Steven.

I don't think this is ready to merge yet. @west comment above says we need to add AS-HE0035 and AS-HE0036, but I am showing that the BoM in branch T4651 has added AS-HE0036 and AS-HE0037. The latter of those is an assembly, so we don't want it on the flat BOM I don't think.

Wed, Nov 28, 4:01 PM · Quiver
kent committed rTAZQUIVERb2fe7dfbfc81: Merge branch 'master' into T4651 (authored by kent).
Merge branch 'master' into T4651
Wed, Nov 28, 3:47 PM
kent reassigned T4635: Move EL-HR0158 and EL-HR0159 connectors and cables to EL-HR0160 and EL-HR0161 harnesses from kent to Steven.

Ok I reviewed this and this is what I found:

Wed, Nov 28, 1:53 PM · Quiver
kent committed rTAZQUIVER8fd60ef2d534: Merge branch 'master' into T4635 (authored by kent).
Merge branch 'master' into T4635
Wed, Nov 28, 1:08 PM
kent added a comment to T4716: Production jigs.

We need a pulley spacer for each pulley. If they are all the same then that would be great, but if not one for each.

Wed, Nov 28, 1:00 PM · Quiver

Tue, Nov 27

kent closed T4717: PP-GP0395 Bed mount table as Resolved.

Ok I checked that it is on the BOM now and merged it in.

Tue, Nov 27, 3:33 PM · Quiver
kent committed rTAZQUIVERd55642f6a154: Add pp-gp0395 bed mount table to BoM T4717 (authored by west).
Add pp-gp0395 bed mount table to BoM T4717
Tue, Nov 27, 3:32 PM
kent reassigned T4659: Actuator cover zip tie holder needs to have fillets from kent to Steven.

I tested the part you dropped off and was able to get the zipties into place without too much difficulty, so I think the task that the ticket was created to address is complete and this is ready to be merged.

Tue, Nov 27, 3:25 PM · Quiver
kent updated subscribers of T3205: Quiver Packaging Redesign.

@samantha @west @tutley @Steven @jessica I just forwarded an email to this effect, but for the sake of the ticket, our packaging designer is having trouble and I'm not sure we can count on them to design the packaging we need in time. To that end, I think we need to design packaging for the printer (within the existing capability of the manufacturing processes of our current supplier).

Tue, Nov 27, 3:14 PM · Quiver
kent added a comment to T3608: Y-axis assembly jig.

I don't see any major issues with the existing design, let's print one out and test it.

Tue, Nov 27, 12:08 PM · Quiver
kent triaged T4715: Make EL-HR0153 ring terminal strips consistent as Wishlist priority.
Tue, Nov 27, 11:52 AM · Quiver
kent triaged T4714: create insert diagrams as Low priority.

Yes, but in an effort to reduce the chances of re-doing work we should wait until later. Maybe pre-beta or mid-beta.

Tue, Nov 27, 11:44 AM · Quiver
kent claimed T4712: TAZ7 Alpha Build Critical Dimension Tracking.
Tue, Nov 27, 11:30 AM · Quiver
kent changed the edit policy for T4712: TAZ7 Alpha Build Critical Dimension Tracking.
Tue, Nov 27, 11:29 AM · Quiver
kent reassigned T4644: EL-HR0141 drawing extruder motors both labeled E0 from kent to Steven.

The task in the OP is completed, however, there is still TH0 and TH1 and Servo0 and Servo1. I think this could be updated for consistency.

Tue, Nov 27, 10:24 AM · Quiver
kent reassigned T4642: Update part numbers that have TAZ 6 name from kent to Steven.

@Steven I did a

git checkout T4642

and confirmed the part numbers are updated as well as the BOM in that branch. AFAICT the changes in this branch complete the task that this ticket was created for, so this is ready to merge.

Tue, Nov 27, 10:07 AM · Quiver
kent closed T4698: Improve bloom behavior on y-motor mounts as Wontfix.

Ok will pick

Tue, Nov 27, 8:32 AM · Quiver

Mon, Nov 26

kent closed T1565: Filament jams as Wontfix.

From @tutley comment above:

Mon, Nov 26, 4:45 PM · Mini-Hibiscus
kent closed T4437: Drawing for AO-Hex heaterblock is missing dimensions and tolerances as Resolved.

I updated the drawing number.

Mon, Nov 26, 4:34 PM · TAZ 6
kent committed rTAZOLIVEc32a8d65ccea: Update part number on drawing (authored by kent).
Update part number on drawing
Mon, Nov 26, 4:31 PM
kent closed T4501: Make clip in switches as Wontfix.

See @tutley comment above.

Mon, Nov 26, 4:18 PM · Quiver
kent closed T3430: Add a connector in the heater cartridge circuit for serviceability. as Wontfix.

The additional connector adds parts and another possible point of failure.

Mon, Nov 26, 4:16 PM · Quiver
kent closed T3431: Find more reliable and manufacturable thermistor connector solution. as Wontfix.

this one is in e3d's court atm. We can open it back up if it continues to be an issue.

Mon, Nov 26, 4:14 PM · Quiver
kent closed T3779: Determine tolerances for x axis leveling system as Wontfix.

@oliver did some experiments and concluded that this does not make as much a difference as originally suspected.

Mon, Nov 26, 4:13 PM · Quiver
kent lowered the priority of T4129: Create burn-in and calibration gcode. from Normal to Low.

This will need to happen, but not until we are ready to make the beta tag.

Mon, Nov 26, 4:11 PM · Quiver
kent reassigned T3977: Include bed power harness retention clip in accesories kit and document how to use it in QSG. from kent to logan.

I think all that needs to happen on this one is to add it to the BOM and order it for the beta/production run. @logan when you have a minute, can you make sure both these things get done?

Mon, Nov 26, 4:10 PM · Quiver
kent closed T4643: PC-CN0117 is not a PCB connector (prefix is inaccurate) as Wontfix.

I think we can keep this as the part number it is without too much more wasted time.

Mon, Nov 26, 4:05 PM · Quiver
kent triaged T4698: Improve bloom behavior on y-motor mounts as Normal priority.
Mon, Nov 26, 12:26 PM · Quiver
kent triaged T4664: Make insert sample parts for insert techs as Normal priority.
Mon, Nov 26, 9:43 AM · Quiver
kent closed T4640: Slice for AS-PR0114 (test) as Resolved.
Mon, Nov 26, 7:43 AM · Restricted Project
kent closed T4640: Slice for AS-PR0114 (test), a subtask of T4639: Slice all parts for quiver (test), as Resolved.
Mon, Nov 26, 7:43 AM · Restricted Project
kent closed T4639: Slice all parts for quiver (test) as Resolved.
Mon, Nov 26, 7:43 AM · Restricted Project

Wed, Nov 21

kent added a comment to T4632: Release parts on BOM.

PP-MP0216 I don't think is ready until T4502 is either resolved or wontfixed. Other than that, I don't have any concerns about the parts that have a Y in the release column.

Wed, Nov 21, 1:00 PM · Quiver
kent triaged T4643: PC-CN0117 is not a PCB connector (prefix is inaccurate) as Normal priority.
Wed, Nov 21, 12:28 PM · Quiver
kent closed T4641: Slice for AS-PR0115 (test), a subtask of T4640: Slice for AS-PR0114 (test), as Resolved.
Wed, Nov 21, 11:54 AM · Restricted Project
kent closed T4641: Slice for AS-PR0115 (test) as Resolved.
Wed, Nov 21, 11:54 AM · Restricted Project
kent triaged T4641: Slice for AS-PR0115 (test) as Normal priority.
Wed, Nov 21, 11:53 AM · Restricted Project
kent triaged T4640: Slice for AS-PR0114 (test) as Normal priority.
Wed, Nov 21, 11:52 AM · Restricted Project
kent triaged T4639: Slice all parts for quiver (test) as Normal priority.
Wed, Nov 21, 11:51 AM · Restricted Project
kent committed rTHCECROPIASILKddb6c93d2cbe: Update the glabel file (authored by kent).
Update the glabel file
Wed, Nov 21, 8:18 AM
kent added a member for Cecropia Silk: kent.
Wed, Nov 21, 8:17 AM

Tue, Nov 20

kent added a comment to T4502: Mask all the threaded holes on the bedplate..

@west this is true, however, we have heard that this is difficult and time consuming to manufacture for our suppliers. Not only that, but the method used to mask the threads is not always very effective. The idea here is that putting a masking dot onto every threaded hole on both sides is easier and more effective than putting in plugs. This is especially true for the holes that mount the bed washers, since they have a masking dot on one side and not on the other which makes it hard for the plug to stay in there during powder coating.

Tue, Nov 20, 11:55 AM · Quiver
kent triaged T4550: Make hotend rework stand as Normal priority.
Tue, Nov 20, 8:35 AM · Restricted Project

Mon, Nov 19

kent added a parent task for T4518: Use off the shelf part for cable tie down: T4510: Finalize tool head cable strain relief.
Mon, Nov 19, 12:51 PM · Quiver
kent added a subtask for T4510: Finalize tool head cable strain relief: T4518: Use off the shelf part for cable tie down.
Mon, Nov 19, 12:51 PM · Quiver
kent triaged T4518: Use off the shelf part for cable tie down as Normal priority.
Mon, Nov 19, 12:51 PM · Quiver
kent changed the edit policy for T4518: Use off the shelf part for cable tie down.
Mon, Nov 19, 12:51 PM · Quiver
kent added a comment to T4515: PP-MP0232 delrin motor mount smooth rod holes not parallel .

Here's a plot of the data @logan

Mon, Nov 19, 9:44 AM · Quiver

Fri, Nov 16

kent changed the edit policy for T4504: Create inspection plan.
Fri, Nov 16, 2:08 PM · Quiver
kent triaged T4504: Create inspection plan as Normal priority.
Fri, Nov 16, 2:00 PM · Quiver
kent added a comment to T4490: Toolhead actuation system is overconstrained..

Based on the SPC data, I think a .4mm slot will allow adequate motion of the secondary guide rod.

Fri, Nov 16, 1:50 PM · Quiver
kent added a comment to T4490: Toolhead actuation system is overconstrained..

If there is a way to remove the setscrew that would be good because I think the slot won't accomplish it's purpose of allowing translational motion of the guide rod. Maybe there is a way to cap each end of the rod in the slot to keep it from moving up or down. It would help too to shorten the interface between the motor mount and the guide rod in the slotted hole to reduce the constraint on rotation about the y-axis. The goal is that the fixed rod constrains rotation and translation about the x and y axis (4 constraints) and the other rod in the slot constrains only rotation about the z-axis (1 constraint).

Fri, Nov 16, 1:49 PM · Quiver
kent added a comment to T4498: Roll back chassis sheet metal changes in source to the sheet metal used for Alphas.

@Steven the parts we have here in MER are rev C for the chassis and rev B for the cover.

Fri, Nov 16, 1:25 PM · Quiver
kent changed the edit policy for T4500: z-top prone to warping at the thin feature.
Fri, Nov 16, 1:21 PM · Quiver
kent changed the edit policy for T4501: Make clip in switches.
Fri, Nov 16, 1:21 PM · Quiver
kent triaged T4502: Mask all the threaded holes on the bedplate. as Wishlist priority.
Fri, Nov 16, 1:21 PM · Quiver
kent triaged T4501: Make clip in switches as Wishlist priority.
Fri, Nov 16, 1:10 PM · Quiver
kent triaged T4500: z-top prone to warping at the thin feature as Normal priority.
Fri, Nov 16, 1:07 PM · Quiver
kent added a comment to T4490: Toolhead actuation system is overconstrained..

Here are the control charts for the spacing of the holes for the rods. A couple things that we noticed is that the mean spacing is different between the two and the variance is low while the tolerance is high. I haven't checked, but I suspect that if the top spacing was towards the top of the band and the bottom spacing was towards the bottom of the band it would bind pretty bad while still being 100% in spec, so we probably want to take a look at these and review these tolerances.

Fri, Nov 16, 11:31 AM · Quiver
kent triaged T4490: Toolhead actuation system is overconstrained. as Normal priority.
Fri, Nov 16, 8:29 AM · Quiver
kent updated subscribers of T3535: Gather alpha parts.
Fri, Nov 16, 7:26 AM · Quiver
kent updated subscribers of T3535: Gather alpha parts.
Fri, Nov 16, 7:26 AM · Quiver

Thu, Nov 15

kent added a comment to T3293: Reduce fastener count.

@kforrest Here is an updated BOM with the hardware broken out on the third tab.

Thu, Nov 15, 3:14 PM · Quiver
kent updated the task description for T3293: Reduce fastener count.
Thu, Nov 15, 3:12 PM · Quiver
kent added a comment to T3293: Reduce fastener count.

@Steven https://code.alephobjects.com/diffusion/TAZQUIVER/browse/master/Production_docs/BOM_reviewing.ods <-- this one.

Thu, Nov 15, 11:26 AM · Quiver
kent committed rTAZQUIVER046d72339272: Export stls and rename file to remove spaces (authored by kent).
Export stls and rename file to remove spaces
Thu, Nov 15, 10:15 AM
kent changed the edit policy for T2437: PP-GP0234 LCD Knob .
Thu, Nov 15, 9:49 AM · Restricted Project