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Building a Prusa MK3 Clone...

CdRsKuLL · 2476

kripo

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Reply #15 on: January 18, 2019, 06:42:21 PM
yes i tried a little bit. the prusa firmware dosnt allow all to much in regard of stallguard. i gues i can try more settings but for the moment its good enough for me, and printing does work just perfect for me, so no worries there :)
whats missing for your printer?



CdRsKuLL

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Reply #16 on: January 18, 2019, 10:19:00 PM
So I'm waiting on fans, U bolts for the bed.. the MK52 magentic bed.. extruder bits, some cable tidy things etc.. just bits.. lol oh and extruder but not sure if it will fit. I might just bite the bullet and go for a pucker one.


I cobbled together a x and y axis and I'm very pleased to say it homes great:-)


Here you go.. :-)



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kripo

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Reply #17 on: January 19, 2019, 07:38:34 AM
hm, it seems to me that the y axes barely moved before it detected to much resistance and called it an end and on the x axes it stopped just before the real end. reaching the end is vital for repeat ability.
but as i have the same problem, its definitly not a show stopper in my opinion. the printer prints just beautifully :D



CdRsKuLL

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Reply #18 on: January 19, 2019, 07:54:11 AM
Hi, no it reached the end, works the same as my original one. :-)


What I did find was you need a really free running bed, extruder. I over tightened my y belt and I got a similar result to what have on the y. It's still tight but not over tight now.

[/size]Steve[size=78%][/size][size=78%].[/size]

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kripo

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Reply #19 on: January 19, 2019, 08:13:26 AM
i tried loosen the belt and had artifacts on the prints. but i will wiggle a little bit more with this :D
printing some hero forge miniatures now. i am every time again so impressed how smooth the trinamic drivers work. :D



CdRsKuLL

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Reply #20 on: January 19, 2019, 08:24:39 AM
Hi, You were right. Really sorry, the y axis didn't move all the way back on the video. It had caught on the motor wire which triggered it.  Just moved it out of the way now :-) I did do a load of tests.. the only thing I needed to do was reverse all the motor directions by swapping over a pair of wires at the motor plugs. 


Fingers crossed Mr Postman might bring some more bits today.


Yeah, when I first got my Original Mk3 I was just like.. well this is what all the hypes about.  It's not the hardware really, although that's decent. It's all the software and tuning that's gone into it.  I could of just gone out and bought an cr10, but thought I would prefer another mk3 for the same price really. Hence this little project. I also can't lie, I have another frame and board on order too.. lol











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kripo

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Reply #21 on: January 19, 2019, 08:29:40 AM
you cant have enough printers!!
i think 2 is the magic number in my case... for fdm...... hehe
my next project: prusa sl1 when the files are on github! :D



CdRsKuLL

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Reply #22 on: January 19, 2019, 08:44:36 AM
Errrm.. 2 is a very good number, 12 is a little obsessive. Oops .But out of all of them my Prusa is my go-to really.


I currently have..
Prusa MK3
Ultimaker 3 extended
Flsun QQ delta
Lymstar E10 (modded)
JG Aurora A5
JG Aurora A5 (modded)
Robo R2 (modded)
Dremel 3D40
JG Aurora Z603s
JG Aurora Z603s (modded)
JG Aurora A3 X2 (scrapping for new prusas)


I might of missed one.. or two.. lol. I think I need to sell some.


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kripo

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Reply #23 on: January 19, 2019, 09:05:57 AM
and all of these are operational and have a place in your home?  :o  :D



CdRsKuLL

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Reply #24 on: January 19, 2019, 09:14:30 AM
Yes they all work but I haven't got the room.  They are all over the place.. lol I just can't stop buying them!


Trouble is.. I don't want to sell alot of them because you kinda become attached as I've spent tme fixing or modding them.


I sold 3 last month too..


Now I will have two new prusas as well soon.. lol . Oh and the new JG Aurora Magic that's being sent to me to test.


Still, you can't have too many printers can you.




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kripo

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Reply #25 on: January 19, 2019, 09:51:27 AM
thats a little bit crazy :D



CdRsKuLL

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Reply #26 on: January 19, 2019, 10:33:51 AM
thats a little bit crazy :D


Yeah, I know.. Still it keeps me out of trouble :-)

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Reply #27 on: January 26, 2019, 07:10:38 PM
So..


I'm nearly there :-)  I'm just waiting on my extruder fan.


Kripo,  I was having the same problems as you with the TMC2130 drivers and it seemed no matter what current number / other numbers I changed it was still not behaving and grinding.. I've even ordered some new prusa motors from Aliexpress I got so fed up...


HOWEVER, tonight I found what I needed to change i think :-)  The sneaker buggers over at Prusa hard coded the current values somewhere else other than the configuration_prusa.h file just for homing !!!   


So in tmc2130.cpp you need to change tmc2130_current_r_home[4] to this..
//running currents for homing
uint8_t tmc2130_current_r_home[4] = {16, 16, 30, 18};


Then it will home great :-)   Job done..   Let me know how you get on with it.


I still need to address an lcd error I have, in that on large text its garbage.. but a step closer :-)


Steve

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kripo

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Reply #28 on: January 26, 2019, 07:56:18 PM
uuuhhh, nice find. will try that tomorrow!
printing a huge d.va and have to wait for that :D



CdRsKuLL

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Reply #29 on: January 27, 2019, 09:19:35 AM
Hey Kripo,


Just wondering did you manage to do the full XYZ Calibration at all?  I can get it to go around all four points but it then fails. I've even borrowed the Pinda off my original to see if that was the problem but it still fails.  In the end I've just commented out #define NEW_XYZCAL in Configuration_prusa.h ...  Still waiting on a 5v cooling fan before I can actually print anything.


Steve

Moodlite is a completely free open source project.
If however you would like to say thanks and help contribute to this site, or just buy me a beer then please donate below. :-)



 


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