First print with emerald was a disaster

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Gemrite
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First print with emerald was a disaster

Post#1 » Tue Dec 12, 2017 9:04 am

Hello everyone,
I need a little help. So on a new vat using emerald for the first time it turned the vat of emerald to cottage cheese. The model was not attached to the build tray. I calibrated the build table. I usually print with cherry and cast it. Prints always come out clean and crisp. So I thought the emerald would be even better. No idea why the model would not attach to the build tray. Any ideas. I wasted 15% of the bottle because there is no way to strain all the matter out of the vat.
Thanks,
John

Aaron RMW
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Re: First print with emerald was a disaster

Post#2 » Tue Dec 12, 2017 9:37 am

Did you change material settings from red to emerald? what machine are you using? I believe I recall something about bumping the MSM up by like 1.5 when switching from red to emerald but I may be wrong, or that may be machine specific.

Gemrite
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Re: First print with emerald was a disaster

Post#3 » Tue Dec 12, 2017 9:39 am

Yes. I changed it for emerald in the settings.

Aaron RMW
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Re: First print with emerald was a disaster

Post#4 » Tue Dec 12, 2017 10:05 am

which machine are you using?

Gemrite
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Re: First print with emerald was a disaster

Post#5 » Tue Dec 12, 2017 10:05 am

B9c 1.2

Aaron RMW
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Re: First print with emerald was a disaster

Post#6 » Tue Dec 12, 2017 10:24 am

what is your MSM currently set to?

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Re: First print with emerald was a disaster

Post#7 » Tue Dec 12, 2017 4:22 pm

I put my cherry back in it and did the same print flawless. Hardly can see the grow lines. I will check the msm when I get back home. Thanks for the help
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Gemrite
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Re: First print with emerald was a disaster

Post#8 » Tue Dec 12, 2017 11:00 pm

My msm is 1.000

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Robert Howle
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Re: First print with emerald was a disaster

Post#9 » Wed Dec 13, 2017 3:24 am

When u change materials u should do a test print using the calibration file.

Robert
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Gemrite
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Re: First print with emerald was a disaster

Post#10 » Wed Dec 13, 2017 7:48 am

What would cause the green to not even attach to the print tray? Setting can not be that off if my cherry prints flawless.

Aaron RMW
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Re: First print with emerald was a disaster

Post#11 » Wed Dec 13, 2017 8:30 am

as I stated in my first reply I believe you need to raise your MSM when switching from cherry to emerald. I didn't take the best notes during my switch but I recall it being necessary. Something like +1.5 or even 2 to my MSM when printing in cherry:red. I think mine was at 1.7 and for red and I'm over 3 now and printing emerald.

Gemrite
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Re: First print with emerald was a disaster

Post#12 » Wed Dec 13, 2017 9:53 am

What does the MSM change? And my prints in cherry is coming out flawless at 1.00. I can do test prints in green and raise the number.

John

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Robert Howle
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Re: First print with emerald was a disaster

Post#13 » Wed Dec 13, 2017 12:30 pm

There is a big diff in the red and cherry and the green and yellow. No solid pigments in the green or yellow. Cure times are different. The MSM raises or lowers the cures times for attachment layers and subsequent layers by an equal amount. If u raise the MSM by .1 then u raise all the cure times by 10%.

MSM is there to adjust for individual projector output. Do the calibration print and adjust from there. You should not have to adjust anything else if the fade, balance, etc. are done. You always want the MSM to be the minimum it takes to stick to the build table and get good prints. Over exposure can cause u to loose crispness on small details and can cause prints to release from the build platform by over curing and also just waste time and lamp hrs.

Robert Howle
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Gemrite
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Re: First print with emerald was a disaster

Post#14 » Thu Dec 14, 2017 9:33 am

I am getting closer now. However I have some slight grow lines. Should I decrease the msm to decrease the grow lines?
Thanks for the help it is slowly paying off. :D
John
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Robert Howle
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Re: First print with emerald was a disaster

Post#15 » Thu Dec 14, 2017 11:46 am

The only way to have little to no grow lines is if the top of the ring is planar and u have it perpendicular to the xy plane.

Robert Howle
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