Notifications
Clear all

Considering ordering Mk3  

  RSS
sinia.k
(@sinia-k)
Active Member
Considering ordering Mk3

But i have a few questions.

Ive read the latest Joseph blog post, in which it seems that the solution for that weird underextrusion problem hasnt been found.
How much is it a problem in everyday use? Do some printers suffer from it more then others? Does it appear only when printing specific models?
At which resolution is it more noticeable?

Ive been an owner of Cr10 for about a year now. Went through all the possible problems a 3d oprinter can have with it. Upgraded it to the max. Learned everything one can in that time and then some. I replaced the motherboard, only to discover better mob had bad capacitors, which i needed to order and replace. i installed Casters second Z, flashed the firmware to get better mesh leveling, changed the hotend, nozzles and PTFe tube... i wont even list how many beds ive changed... and then had it malfunction again, and again, and again.
And i have enough of that ... stuff. Even if its currently working.

I need a printer for a bit more serious work then just printing little dolls for fun. So thats why im considering ordering MK3.
I need to make some prototypes for my future business, and i need those prototypes to be as good as possible for public presentation.
I will still use my CR 10 for larger parts, but i was hoping to get a better printer to do the rest - and to have it as a backup if... when Cr10 croaks again.

Few more:
What kind of heater Mk3 uses for the bed? What are the temperature differences between different parts of the bed? Anyone measured?
My Cr10 has 15 degrees difference between the center and the corners... but i got the keenovo silicone heater for that.
How difficult would it be to increase the size of the bed? Ive seen some Mk2 models that have been extended by users... anyone did it with Mk3 and is it possible to get such a version officially?

I see that the waiting time for the Mk3 with txt coated sheets is about 7 weeks... do they ship regularly or are there unexpected problems with those sheets?

Any info would be appreciated and will help me to make the decision faster, so i can order it sooner.

Posted : 01/08/2018 1:04 pm
bobstro
(@bobstro)
Illustrious Member
Re: Considering ordering Mk3


[...] Ive read the latest Joseph blog post, in which it seems that the solution for that weird underextrusion problem hasnt been found.
How much is it a problem in everyday use? Do some printers suffer from it more then others? Does it appear only when printing specific models?
At which resolution is it more noticeable?
Don't read too much into this. The Prusa blog post had comparison shots with the same print, same filament and same lighting on 7 different printers, and they all had "issues". It is not a Prusa Mk3-only issue, it's just that Prusa is the only one looking into it. It's mostly a subjective thing. For some people, it's a problem. Others don't notice it. It has no difference on the part strength characteristics, and you have to hold parts in just the right light to see it at all. With some filaments, it's very difficult to see at all. The Mk3 is putting out prints that are stellar. If Prusa comes up with an improvement, all 3D printer users will benefit.

[...] I see that the waiting time for the Mk3 with txt coated sheets is about 7 weeks... do they ship regularly or are there unexpected problems with those sheets?

The powder-coated smooth and textured sheets are taking a while, and may take a while longer to completely sort out. In the meantime, you can order the double-sided PEI smooth sticker sheets without any issues. IMO, they work quite well and I'm really wondering if I need to order a powder-coated sheet for anything but the texture difference.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 01/08/2018 4:44 pm
Nikolai
(@nikolai)
Noble Member
Re: Considering ordering Mk3

Hello Sinia.k and welcome to the forum.
Out of curiosity, what prevents you to using CR10 for "serious work"? What is your expectation to the MK3? At the end it's a similar type of FDM printer.

Often linked posts:
Going small with MMU2
Real Multi Material
My prints on Instagram

Posted : 01/08/2018 6:29 pm
thrawn86
(@thrawn86)
Honorable Member
Re: Considering ordering Mk3


Hello Sinia.k and welcome to the forum.
Out of curiosity, what prevents you to using CR10 for "serious work"? What is your expectation to the MK3? At the end it's a similar type of FDM printer.

you won't be getting much more out of an mk3 compared to an upgrade cr10


It is not a Prusa Mk3-only issue

602 is the catch-all for a lot of different issues now unfortunately, but that only partially applies to the original basket-weave pattern posted on github.

There are other issues which are mk3 specific and have not been officially addressed and don't apply to everyone but can be resolved in other ways
-bondtech gear meshing / v-pattern / moire
-hotend mount loose/wiggle
-weak x-ends
-still no good tensioning solution

Posted : 01/08/2018 7:28 pm
bobstro
(@bobstro)
Illustrious Member
Re: Considering ordering Mk3


[...] 602 is the catch-all for a lot of different issues now unfortunately, but that only partially applies to the original basket-weave pattern posted on github.
Definitely. Prusa did transplant their extruder onto a totally different frame and the problem persisted, and last I heard, the Bondtech extruder was still considered the likely origin for the "basketweave" issue, so I was simply pointing out that this particular issue may affect other devices. Whether or not that bothers an individual is up to personal tastes, but I wouldn't say the Mk3 produces lousy prints because of it.

There are other issues which are mk3 specific and have not been officially addressed and don't apply to everyone but can be resolved in other ways.True. I was only responding the the OP's "weird extrusion" question.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 01/08/2018 9:46 pm
sinia.k
(@sinia-k)
Active Member
Topic starter answered:
Re: Considering ordering Mk3

Out of curiosity, what prevents you to using CR10 for "serious work"?
I guess i didnt write the post above and im just hallucinating being here.

Definitely. Prusa did transplant their extruder onto a totally different frame and the problem persisted,
So... how about changing the extruder? Wild idea i know.

you won't be getting much more out of an mk3 compared to an upgrade cr10
Right, Thanks for that proclamation. i guess i dont need to bother then.

>There are other issues which are mk3 specific and have not been officially addressed and don't apply to everyone but can be resolved in other ways
-bondtech gear meshing / v-pattern / moire
-hotend mount loose/wiggle
-weak x-ends
-still no good tensioning solution

Thats just... great. Fabolous even.

>Don't read too much into this. The Prusa blog post had comparison shots with the same print, same filament and same lighting on 7 different printers, and they all had "issues". It is not a Prusa Mk3-only issue, it's just that Prusa is the only one looking into it.
Oh wow, that means we should all applaud Prusa instead!

What a hero!

Btw, thats not a solution, thats an excuse.

And for all the crap my CR10 does, it doesnt do that. Well... not once you caibrate the extrusion, change the hotend, nozzles, pTFe tube, the bed, add second Z, upgrade the firmware, the motherboard, capacitors on it... and so on and so on...

It seems ill wait a little. If i ever order it at all.

- If i wanted ordinary PEI sheets i wouldnt be asking about powdered ones.

Posted : 02/08/2018 12:02 am
Nikolai
(@nikolai)
Noble Member
Re: Considering ordering Mk3


Out of curiosity, what prevents you to using CR10 for "serious work"?
I guess i didnt write the post above and im just hallucinating being here.

Not sure what you mean by that.
Still unclear to me what's your definition of "better printer" and "serious work". But looks like you're not in the mood to explain it and only here to confirm your already made decision.
Good luck with your next printer.

Often linked posts:
Going small with MMU2
Real Multi Material
My prints on Instagram

Posted : 02/08/2018 1:31 am
bobstro
(@bobstro)
Illustrious Member
Re: Considering ordering Mk3


[...] Btw, thats not a solution, thats an excuse.
I'm not trying to sell you anything. I thought you were earnestly after some opinions based on how you phrased your post. Apparently you found exactly the information you needed to feel comfortable with your choice, so it hardly matters what the responses are.

[...] - If i wanted ordinary PEI sheets i wouldnt be asking about powdered ones.Good thing you already decided on something else then, eh? Sorry I bothered you with my response. Good luck and have fun!

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 02/08/2018 4:57 am
sinia.k
(@sinia-k)
Active Member
Topic starter answered:
Re: Considering ordering Mk3

I'm not trying to sell you anything.
Thanks for a non sequitor created by your paranoia. I really need more of those.

Apparently you found exactly the information you needed to feel comfortable with your choice
No. but i guess you can telepathically read my thoughts, so you dont even need to find words to feel comfortable with your choice - you just magically create them.

Thats called projection in psychology, btw. Occasionally funny, mostly disgusting.
Also an ad hominem logical fallacy.

I asked, you answered, i answered back. Thats all there really is to it.

Posted : 02/08/2018 11:23 am
gary.b
(@gary-b)
Trusted Member
Re: Considering ordering Mk3

I guess I'll say it. What an ass hat.

MK2S & Mk3 my mini farm is alive 😆

Posted : 02/08/2018 5:36 pm
Bytor
(@bytor)
Estimable Member
Re: Considering ordering Mk3

looks like he's just another asshat troll...

- 1st "printer" TIKO 3D
- 2nd PRUSA i3 MK2S with MMU v1
- 3rd PRUSA i3 MK2S
- 4th PRUSA i3 MK3 with MMU v2- 5th?? PRUSA i3 MK4 (upgraded from MK3) with MMU v3 (waiting for…

Posted : 02/08/2018 6:30 pm
DevDoc
(@devdoc)
Estimable Member
Re: Considering ordering Mk3


I guess I'll say it. What an ass hat.

+1

Posted : 02/08/2018 6:44 pm
sinia.k
(@sinia-k)
Active Member
Topic starter answered:
Re: Considering ordering Mk3

looks like he's just another asshat troll...

That would be your mom.

I see projections keep coming from resident imbeciles. Not surprising.

Posted : 02/08/2018 9:23 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: Considering ordering Mk3

Folks please come back to the question and leave your verbal sparring for other sites

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 02/08/2018 10:03 pm
OneThou
(@onethou)
Member Moderator
Re: Considering ordering Mk3

Cleaning up here after joan.t – I removed the most recent posts since they focused on a 3-letter word which was not "Mk3" 😉

Posted : 06/08/2018 1:42 pm
Share: