- User Since
- Aug 31 2016, 12:51 PM (137 w, 6 d)
@david.hall These changes should have gone through an MCO.
With proper reaming we shouldnt need to broach all the parts. Also i suspect the rise in binding may actually be coming from broaching all of the parts, as it is very easy to make the bore not aligned with the axis of motion when broaching by hand. (hence the issue with the orientation of the parts once installed, both bores are not parallel)
@oliver have there been any changes to the mfg process?
Fri, Apr 19
@samantha here are the notes i have:
@oliver we switched to adjusting flow rates for extrusion between various materials like rigid and flexibles so it would not require firmware updates for the different materials, but i think it would be worth while to calibrate the esteps with rigid filaments. Doing a flow rate adjustment for extrusion means every machine has to run specific g code tailored to that extruder. If we calibrate esteps with rigid filament and have the esteps be machine specific, then any gcode ran should perform similarly across various machines. For example if we were to run quivers in the cluster and adjusted extrusion based on flow rate, every machine would need its own gcode.
Thu, Apr 18
@logan i saw about 3-4mm under extrusion on one of the quivers i was using pretty early on, also the variance is somewhat related to idler tension. especially with the softer filaments. This definitely will play into under sized circles, as well as the issue with the vernier lines. For taz we have always calibrated the extruders at the calibration stage of the production line, and minis we dont even though they are effectively the same tool heads. I think we should consider calibrating the quiver toolheads at calibration like we did for taz6.
@logan thats the way it was intended to be installed. all the retaining ring chamfers face upwards (in the z axis of the part) to match the internal chamfers of the retaining ring slot.
Tue, Apr 16
i dont understand what you mean? they are all uniformly facing the same direction
hence the chamfer facing up on both the bottom and top retaining rings
the printed part that has the retaining ring slot has a chamfer so it will print the overhang properly. The chamfer of the retaining ring should match the internal chamfer of the printed part that is recieving it
sounds good. Is he going to bring it to Aleph Rockies?
per T6465 you can try cutting 200mm off your feed tubes, this will reduce the amount of drag on your filament and prevent the PTFE tube from getting caught in the frame.
might help if the filament is slipping on the hobbing
im surprised you're not having issues with the top feed reel
@Steven Heres a preliminary drawing for this rod
thank you sir!
@matth can you verify that the encoder wheel spins with the filament sensor wheel when filament is ran through it? if the screw holding the assembly is too loose the filament wheel (with o rings) can spin but the encoder will not.
Also if your idler tension on the tool head is too loose and you're getting partial strip outs or the filament is slipping on the hob this will look like a false positive
@jperry can i get a part number made for: Igus AWM-06 smooth rod, 90mm length
yea i can do that after this print is done
The pic is slightly out of focus, but this seems to be a good length
@kent looks good!
Mon, Apr 15
i think they should be able to be kept the same with implementation of backlash comp in xy
@logan please explain the changes that are "necessary" as @anolen and myself dont understand the need.
Also we think you may be having an issue with cura (@anolen and i both had this problem). You can select a profile on extruder 1 and click on the tab for extruder2 but even though the dropdown bar says its the same profile, it is not. if you click the down arrow you will see that they are not the same. I think you may have accidentally been selecting 2 different profiles because of this, but expecting they are on the same one.
maybe you were aware of this weird caveat but i figured it needed mention.
@logan i dont think all of your changes are necessary.
why are you making 2 different profiles when we are printing with the same material. They should both be the same profile, and should be from @anolen 's standard print profile (what the customers will be using) or very close to it.
the slimline gearbox from Lin Engineering has "this information herein is the property of Lin Engineering. No portion of this data shall be released, disclosed, used, or duplicated for any purpose without the written consent of Lin Engineering."
@kent these are off the shelf parts.
we should not create an AO drawing for them. Only supply the suppliers drawings/spec sheets if they exist.
@kent you should send the specific USB drives its failing with as well
ok im closing as resolved, we can reopen if we see another one!
@kent have we seen this on any other machines?
@robert any updates on this one?
Fri, Apr 12
we may want to add 5mm or so to that side of the harness for some additional slack. In the photo it appears those wires are pulled pretty tight. Also in the photo they are bending around the end of the sleeving, where we can have the motor wires come out of the side of the sleeving to alleviate this hard turn.
Thu, Apr 11
we may need to look at the x ends as well
@oliver it looks as if some of them are getting reamed a little crooked. We may need to make sure the fixture isnt getting worn out.
i have mentioned this previously when this issue came up before. Often just runnning the reamer through the bore once isnt enough
i found running the reamer through 2x or even 3x gave good results.
@david.hall not sure if the techs are just running through once and calling it good, but figured id bring this up again
Wed, Apr 10
@logan select polylite on both nozzles. make sure they are the same profile (ie. high detail or whatever), change the settings on one of them. Then when you are done create new profile from changes. Save it.
now you should be able to select your custom profile with all edits on 1 nozzle, and another profile on the other. (i believe you should have the layer height be the same on both profiles or it will average them)
@mjpelletier any ideas on why this is happening?
mine is only taking about 4 seconds to recognize
@robert you should be able to read the usb after powering on the machine with it plugged in, there is a delay for it to recognize the USB however it shouldnt take very long. maybe 10 seconds
@logan you have to set both extruders to the profile you want to change, then export your profile. then you can select your individual profiles for ea nozzle
can you measure the filament diameters and make sure they are close to each other?
it looks like the green is under extruding and the black is over extruding
@robert are you using the same filament across these machines or is it from different reels?
could be a line width/flow issue for one of the toolhead profiles, or under machine settings one of the nozzle diameters might have accidentally been adjusted on the machine this was sliced with.
Tue, Apr 9
@logan no prob. sorry if i misinterpreted your comment. I think this amount of gap is acceptable as well
@logan this is with the latest rev of the corners and the latest center post. There is .5-.75mm gap at the edge. The bed is heated to 100C
This gap is smaller than i had previously seen (using taz6 corners and the original center post) but it is still there.. Dont get me wrong, I think it is probably fine, but you said that there is NO gap, so heres the proof that it is still there.
This is on the quiver at my desk, and is only a sample size of 1.
@logan while the center post support does reduce the sagging around the edges, there is still some sagging.
the prototype corners possibly sag in the middle a little as only the edges were supported, however there were no heating issues in the center of the bed (likely because the plate bows upwards when heated) and the edges were pushed up flush to the plate. This addressed the number 1 issue we had heard with the modular taz beds, a visibly sagging plate.
Mon, Apr 8
@AOJAS The slightly thicker powder coat on these chassis should be no problem!
Fri, Apr 5
@logan yes there should be the M425 S0 in the start gcode, you are correct, Im not seeing it in there either.
Wed, Apr 3
@logan backlash compensation is turned off by default. Hence the M425 S0. This is enabled through Cura settings just like with Mini2.
@logan This is the same start g code as before just with updated wipe locations
@MikeR there is new firmware .104 and later that corrects the probe points as some machines were missing the front right corner. This requires new start gcode, which will correct the wipe. I gave @anolen some start gcode that has the wipe corrected, but she also needed to make some edits,so this is in the works
@robert @logan @EricNugent @kent this is why the prototype/alpha corners had the little legs as they help support the plate and prevent it from sagging. With the right infill density they were laying flat and not bowing the beds upwards.
I would recommend we go back to those corners and revisit the slice and or model if need be.
Tue, Apr 2
Mon, Apr 1
Fri, Mar 29
Pushed w/ rTAZQUIVER1dc9511b4b78
Do we need a change order for this or can i just change the part number on the drawing?
@DaniAO you are correct that Actuonix is sending EL-MS0536 already cut to length and terminated with the molex connector
@logan cool I just wanted to verify that gets checked
Thu, Mar 28
Tue, Mar 26
Mar 22 2019
Mar 15 2019
also are you plugging directly into the USB port on the CPU or is it into a USB hub?
@kent i think these values look great!
@kent that is on a MINI 1
Mar 14 2019
looks good to me
Mar 11 2019
Mar 8 2019
Mar 7 2019
Mar 6 2019
Using 100% correction, 0 smoothing, autocal backlash values, and 100.5 xy steps, I was able to get a print that was in spec.
i dont like the idea of wire brushes, as the individual strands can break off and end up shorting a heater
Mar 5 2019
I think we can loosen the tolerances on the drawing to match those of TAZ6
@west tested the calibration print with Redgum which mechanically has the same x/y axes as quiver but uses RAMBO instead of Archim. The print came out sized properly, which points to an issue with the Archim
Here are the issues i found. They are pretty minimal, and some may not actually be a problem, i.e. missing "/" and older template on reused drawings:
Mar 1 2019
i think @oliver just about covered it. The only things i think should be added to his list are filament sensor boards, and interface boards.
Feb 26 2019
@west completed 3 or 4 of the wireframe skull prints with tons of retractions using 2 different quivers and there were no issues with strip outs or filament sensor problems
Feb 20 2019
@karrad yea i agree. i think using the bed to shear the filament off is the best option
Feb 19 2019
Feb 13 2019
@kent we have to have the cables where they are to pass conducted emissions. We had them toward the front of the case before and we failed emissions.
Feb 12 2019
Feb 11 2019
lol yea you are correct, *shorter
i dont have a measurement, but your machine has a properly seated, and correct length beta xmin bump stop. if yours is wiping 2 or so mm to the left, then the jig should be made an additional 2mm or so longer. (2mm may be too much)
@logan the only difference between yours and @marcio's machine that i can see now is the xmin bump stop. You have the beta part, and he has the alpha part. We may want to just adjust the beta y spacer jig so that firmware and start gcode wont need adjusted, and that way both alphas and betas will work with the same firmware versions
Feb 8 2019
@logan well the alphas all have the older style xmin bump stops that are hard to get fully seated. So @anolen had me look at hers since they were all wiping too far to the right. All the xmin bump stops werent quite seated (about 2-3mm off) and i seated them properly and hers are all wiping correctly now.
@logan i inspected the x min bump stop and it was printed with a ton of oversquish. it measures about 39.5 off the rod, and was measuring just under 38mm when installed. I replaced the xmin bumpstop with one that measures 40mm. Also i compared the y axis position to @marcio's machine and yours was slightly to the right, so I shifted your y axis 1mm to the left. After these two changes, the machine has no probem wiping or probing. I will bring the machine back to you now.