Print detail suddenly poor (emerald, 30x30y, creator1.2)

Hardware issues, problems and solutions
cedricwinterwolf
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Print detail suddenly poor (emerald, 30x30y, creator1.2)

Post#1 » Sun Oct 14, 2018 4:16 pm

Hello!

Plenty of successful prints and recently printed a ring that is essentially lacking some detail.
Smallest feature is a 0.5mm hole through the band, which didn't even print at all, completely filled in.
Most of it is 1-3mm inset bezel seats (pictured below)

What's interesting though is the split-bezel that is oriented straight up printed fine. Square and even.

But the inset-bezel seats and their 0.5mm holes didn't print well at all.

Table is calibrated, projector is calibrated, resin is new, vat is clean.
Rinsed with (used but clear) IPA and a little forced air from a squeeze bulb.

When i noticed the detail missing I gently looked for it with a toothpick and it's just not there. Edges round and shallow.
.
.
.
Is this a PDMS issue? I've only done maybe 15-18 prints.
Is there something else I'm missing?
.
.
.
Photos attached:

THIS is what I tried to print -->
intended-ring.png


THIS is what I got -->
IMG_20181014_151040.jpg
IMG_20181014_151014.jpg


THESE printed great--->
IMG_20180805_185924.jpg
IMG_20180829_140321.jpg
pendulum.jpg
Last edited by cedricwinterwolf on Sun Oct 14, 2018 6:32 pm, edited 1 time in total.

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akgold
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Posts: 2101

Re: Print detail suddenly poor (emerald, 30x30y)

Post#2 » Sun Oct 14, 2018 6:04 pm

What printer?
if it is a 1.2hd or 1.1 printer then you would need to look at the pdm for fogging.
next check the focus it could have got bumped and calibrate the build table.
I'm so far behind I think I'm First !!

cedricwinterwolf
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Posts: 18

Re: Print detail suddenly poor (emerald, 30x30y)

Post#3 » Sun Oct 14, 2018 6:29 pm

For reference: I know it can print these because this ring came out just fine only 4 or 5 jobs ago, size 5.75

bee-ring.png
Last edited by cedricwinterwolf on Sun Oct 14, 2018 6:33 pm, edited 1 time in total.

cedricwinterwolf
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Posts: 18

Re: Print detail suddenly poor (emerald, 30x30y)

Post#4 » Sun Oct 14, 2018 6:32 pm

akgold wrote:What printer?
if it is a 1.2hd or 1.1 printer then you would need to look at the pdm for fogging.
next check the focus it could have got bumped and calibrate the build table.



Agh, we're in the 1.2 and earlier forum so I assumed. Yes it's a 1.2, sorry.

The PDMS is a bit foggy, but not much. But after a dozen prints it's toast? Seems a little premature. I will try to print it outside of the slightly hazy area and see what happens.

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RobertW
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Re: Print detail suddenly poor (emerald, 30x30y, creator1.2)

Post#5 » Mon Oct 15, 2018 2:50 pm

Foggy PDMS sounds like the problem. My 1.2 was giving (at most) 15 prints per coating... with the last few prints having degraded quality. I am SOOOOO happy we upgraded to the B9 Core! Never needing to perform calibrations or change pdms is a real game changer. :D

cedricwinterwolf
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Posts: 18

Re: Print detail suddenly poor (emerald, 30x30y, creator1.2)

Post#6 » Mon Oct 15, 2018 6:13 pm

RobertW wrote:Foggy PDMS sounds like the problem. My 1.2 was giving (at most) 15 prints per coating... with the last few prints having degraded quality. I am SOOOOO happy we upgraded to the B9 Core! Never needing to perform calibrations or change pdms is a real game changer. :D



Oof, that does sound like a game changer!

I just need to get 60 successful prints from this machine and it's paid for itself.
I think I am at 16 now. And I do like the machine, but no more calibrations or PDMS shenanigans sounds great.

So update: I tried again and had a ring and two cuboctahedrons in the layout. None of them formed NEAREST the build table, but seemed to still more or less print accurately at furthest-from. I moved the ring model way to the end of the 30micron space and the bezels are much cleaner now. Just missing the entire bottom half of the ring :lol:

Supports are entangled/blended and the first 2mm of the models are more or less not there. Scrambled or missing entirely.

I should have taken a photo before I cut the struts off but I was too curious for my own good.

Is this still hazy PDMS or a strut/design issue?

Ordered new PDMS material, should be here wednesday or thursday.

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akgold
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Re: Print detail suddenly poor (emerald, 30x30y, creator1.2)

Post#7 » Mon Oct 15, 2018 6:31 pm

did you recalibrate the build table????
also people have had great success with adding a layer of the FEP film to the pdms.

viewtopic.php?f=18&t=7452&p=46431&hilit=film%5C#p46431
I'm so far behind I think I'm First !!

cedricwinterwolf
B9 Maker
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Posts: 18

Re: Print detail suddenly poor (emerald, 30x30y, creator1.2)

Post#8 » Mon Oct 15, 2018 6:35 pm

RobertW wrote:Foggy PDMS sounds like the problem. My 1.2 was giving (at most) 15 prints per coating... with the last few prints having degraded quality. I am SOOOOO happy we upgraded to the B9 Core! Never needing to perform calibrations or change pdms is a real game changer. :D



Unless this is too much support structure....
sprues.png

cedricwinterwolf
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Posts: 18

Re: Print detail suddenly poor (emerald, 30x30y, creator1.2)

Post#9 » Mon Oct 15, 2018 6:36 pm

akgold wrote:did you recalibrate the build table????
also people have had great success with adding a layer of the FEP film to the pdms.

viewtopic.php?f=18&t=7452&p=46431&hilit=film%5C#p46431


Yes, as I said in the original post, table and projector re-calibrated, new emerald green used, vat clean.

Haven't heard of FEP film, will need to look into that.

cedricwinterwolf
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Posts: 18

Re: Print detail suddenly poor (emerald, 30x30y, creator1.2)

Post#10 » Mon Oct 15, 2018 6:43 pm

akgold wrote:did you recalibrate the build table????
also people have had great success with adding a layer of the FEP film to the pdms.

viewtopic.php?f=18&t=7452&p=46431&hilit=film%5C#p46431


Just read through the FEP thread, and looked for others with no success, but it sounds good!

Can't find a link for buying the correct FEP anywhere on the forum, help?

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akgold
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Re: Print detail suddenly poor (emerald, 30x30y, creator1.2)

Post#11 » Mon Oct 15, 2018 8:00 pm

Found it here
viewtopic.php?f=16&t=7328&p=45963&hilit=FEP#p45963

this is the link posted http://catalog.cshyde.com/item/3d-print ... -5s-3d-6x6

if you type FEP in the search above on the right on any key word there is a plethora of info on just about
every subject.
I'm so far behind I think I'm First !!

cedricwinterwolf
B9 Maker
B9 Maker
Posts: 18

Re: Print detail suddenly poor (emerald, 30x30y, creator1.2)

Post#12 » Tue Oct 16, 2018 9:17 am

akgold wrote:Found it here
viewtopic.php?f=16&t=7328&p=45963&hilit=FEP#p45963

this is the link posted http://catalog.cshyde.com/item/3d-print ... -5s-3d-6x6

if you type FEP in the search above on the right on any key word there is a plethora of info on just about
every subject.


Odd, I literally searched 1.2&Earlier for "FEP" and didn't get that post.

Thanks!

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