My custom Cartesian

mrehorstdmd

I had some no-name Chinese GT2 belts in my printer and had it all apart recently and found that they, too, left black dust on the machine near the motor/drive pulley. I also found the black powder caked in the grooves in the pulley, easily removed with a toothbrush. I wonder if that sort of thing is going to cause some degradation in print quality after a couple years of use if you don't periodically clean off the pulleys.

I have replaced the belts with Gates GT2 that have nylon facing on the teeth and no longer see any black (or other color) powder around the motor or in the drive pulley grooves.

JoergS5

@mrehorstdmd please tell me what type the Gates GT2 is: do you mean a Poly Chain GT2, which is available as 8 MGT and 14MGT? The teeth are 8 and 14 mm apart, which confuses me a lot.

And Gates PowerGrip: I can only find PowerGrip GT3 2MGT, 3MGT and 5MGT.

Only GT3 2MGT has a 2 mm teeth distance, Do you use those?

And if it is GT3 2MGT, can you use the normal GT2 pulleys?

It's all very confusing.

whosrdaddy

@joergs5 : I think he uses LL2MR09 (9 mm belt), 6mm version is LL2MR06

JoergS5

@whosrdaddy said in My custom Cartesian:

LL2MR06

Thank you for the information.

My eb.. does not find it ;-(
This will become hard to buy for me.

mrehorstdmd

@joergs5 said in My custom Cartesian:

@mrehorstdmd please tell me what type the Gates GT2 is: do you mean a Poly Chain GT2, which is available as 8 MGT and 14MGT? The teeth are 8 and 14 mm apart, which confuses me a lot.

As someone else posted, I am using LL2MR09 belts. I do not see any difference in print quality between the no-name belts and the Gates belts, but rubber dust doesn't give me a lot of confidence in the long-term viability of the no-name belts.

JoergS5

@mrehorstdmd Thank you to clearify. 09 has the disadvantage for me to replace everything. But for higher tension it may be woth it.

wilriker

@mrehorstdmd said in My custom Cartesian:

I do not see any difference in print quality between the no-name belts and the Gates belts, but rubber dust doesn't give me a lot of confidence in the long-term viability of the no-name belts.

At the time of purchasing these belts I did not have any clue of what I was doing. By now I know that whenever I have to replace a belt I will also switch to a genuine Gates one. Even if it is just to get rid of the dust.

@JoergS5 When I switch to Gates belts, I will purchase these. From all I know these really seem to be genuine Gates although coming from Hong Kong.

JoergS5

@wilriker I am sure this puffy rice tastes very good

Thanks for the hint.

OBELIKS

@wilriker Well soon I will be able to tell you if those Wantai 42BYGHM810 are any good. I checked and ruled out everything but steppers, so I ordered these.

wilriker

@obeliks I have to admit I miss a little bit of reference of what problem you are trying to solve.

I thought about these motors now for a while. My largest uncertainty is the difference in motor length compared to what I currently have. Since I use dampers on the motors these additional 8mm could be a problem for at least Y axis as my holder for the heated bed has a rather small cut-out for the motor.

But then again, motors are probably not going to be the very next thing to exchange, so lots of more time to think about it.

OBELIKS

Heh, don't worry about it.
I just wanted to say I will be able to report soon.

wilriker

@obeliks What I am very interested in is the question if these motors will have an audably different noise level and if so in which direction.

OBELIKS

I will measure before and after.

wilriker

@obeliks Cool, thanks! Looking forward to the results of that. Because if they are more silent, guess what's next on my to-do list.

OBELIKS

First thing, package was here in 3 working days and it came from Germany.
Now the big problem (maybe?), the shafts have no flat spot. At all.
Second small problem, the leads are short.

deckingman

@obeliks No flats is no big problem - all you need is a file. The shafts aren't usually hardened so it's easy to do.

OBELIKS

@deckingman Ah, not hardened, OK then. Thanks.
I haven't even tried, I'm just from the vacation. The good thing is that next week I'm still at home.

deckingman

@obeliks Yes it's dead easy to do. I've filed flats on all 10 of my motors.

wilriker

@obeliks said in My custom Cartesian:

First thing, package was here in 3 working days and it came from Germany.

Yeah, Wantai has a European warehouse in Hamburg here in Germany. So, if you ordered from their "EU Stock" it'll come from there.

OBELIKS

Results are in they are about 5dB quieter and 5°C cooler than stock A8 steppers
Also, it seems I am melting.