Priting problems at normal msm

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ferograf
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Priting problems at normal msm

Post#1 » Sat May 23, 2015 12:43 pm

Hi all I'm having problems printing i have make calibration but to obtain a optimal calibration print i have to increase the msm to 1,5 i think it is very high lv for a new projector. my machine dont have more than one month bought.

what could be causing this problem, also i am having some type of humid or dust projecting from inside the projector.

Regards Fernando
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IMG-20150520-WA0051.jpeg
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Robert Howle
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Re: Priting problems at normal msm

Post#2 » Sat May 23, 2015 5:38 pm

You do know that calibrating is done with the vat in place with the printed paper grid lying on the surface of the PDMS?

Why are u showing the grid on the build table?
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akgold
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Re: Priting problems at normal msm

Post#3 » Sat May 23, 2015 6:16 pm

Robert Howle wrote:You do know that calibrating is done with the vat in place with the printed paper grid lying on the surface of the PDMS?

Why are u showing the grid on the build table?


I think he is using the red background to show the white spot being projected as it shows up better.
I too have one of these anomalies on my ver.1.1 and have in the past mentioned it here but there were no explanations as of yet to why it is there or how to eliminate it.
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IMG_2051.jpg
I'm so far behind I think I'm First !!

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Robert Howle
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Re: Priting problems at normal msm

Post#4 » Sat May 23, 2015 10:10 pm

Oops. Sorry. I see now.

looks like something on the lens.
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ferograf
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Re: Priting problems at normal msm

Post#5 » Sun May 24, 2015 9:57 am

Robert Howle wrote:You do know that calibrating is done with the vat in place with the printed paper grid lying on the surface of the PDMS?

Why are u showing the grid on the build table?


Hi Robert, I have seen all videos tutorials you make for Working with the b9, in this images i am not calibrating the b9 i am just showing that mark in the projector image and i use the calibration image to project it, thats why the vat is not on the plataform because i imagined that someone would say that may be something in the pdm.

Best Regards,

Fernando Ortiz

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ferograf
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Re: Priting problems at normal msm

Post#6 » Sun May 24, 2015 10:27 am

New Calibration Print at 1.1 MSM the middle prongs still down with a pointed shape and F letter in both sides are not well formed
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20150524_110938.jpg
20150524_110820.jpg

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ferograf
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Re: Priting problems at normal msm

Post#7 » Sun May 24, 2015 11:12 am

This is the next Calibration at 1.2 MSM the middle prongs still deformed and at 1.6 mm of diameter. gonna try the next print at 1.3 MSM.
Attachments
20150524_120314.jpg
20150524_120129.jpg
20150524_120035.jpg

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mikej
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Re: Priting problems at normal msm

Post#8 » Sun May 24, 2015 1:17 pm

Recheck the optical calibration. MSM can change the diameter (via under/over exposure) by a small amount (0.1 at most) but if they pegs are only 1.6mm (should be 2.0) my guess is the projected pegs are also too small. If you are printing out the 10mm grid pattern for your projector calibration, make sure it's REALLY 10 mm grids and not something smaller/larger (some 2D printers can be pretty far off).
Measure Twice, Cut Once.

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ferograf
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Re: Priting problems at normal msm

Post#9 » Sun May 24, 2015 1:49 pm

mikej wrote:Recheck the optical calibration. MSM can change the diameter (via under/over exposure) by a small amount (0.1 at most) but if they pegs are only 1.6mm (should be 2.0) my guess is the projected pegs are also too small. If you are printing out the 10mm grid pattern for your projector calibration, make sure it's REALLY 10 mm grids and not something smaller/larger (some 2D printers can be pretty far off).


Hi Mike this is my grid calibartion print for the projector Cl.
20150524_144336[1].jpg
20150524_144414[1].jpg

Best Regards Fernando Ortiz

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Re: Priting problems at normal msm

Post#10 » Sun May 24, 2015 2:17 pm

Show me a photo of the position of the projector hanger fine vertical adjust thumbscrew. In the average printer, you will end up backing that screw out about 1/4 inch in order to get the projected grid calibrated.
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ferograf
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Re: Priting problems at normal msm

Post#11 » Sun May 24, 2015 2:52 pm

mikej wrote:Show me a photo of the position of the projector hanger fine vertical adjust thumbscrew. In the average printer, you will end up backing that screw out about 1/4 inch in order to get the projected grid calibrated.


Hi Mike
here goes the pic of the hanger.
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20150524_152416.jpg

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ferograf
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Re: Priting problems at normal msm

Post#12 » Sun May 24, 2015 3:09 pm

mikej wrote:Show me a photo of the position of the projector hanger fine vertical adjust thumbscrew. In the average printer, you will end up backing that screw out about 1/4 inch in order to get the projected grid calibrated.


Mike i also just made a print but with this configuration:

Print Setup Analysis:
Caution: Calculated material Exposure Times are not utilized.
Printer Info:
Configuration: B9Creator v1.2.0, XY at 30 microns
Port: COM3, Display: 2 (1920 x 1080)
Total Projector Lamp Hours: 59
MSM: 1.4, Fade: 0.1, Balance: 0.2, Slope: 1.05
Job Info:
File: C:/Users/user/Desktop/imprimir/rey perla.b9j
Name: rey perla
XY Pixel Size: 30 µm, Slice Thickness: 30 µm
Total Layers: 303
Material Volume Solid: 2.13 ml, Liquid: 2.13 ml
Material Exposure Info:
Selected Material: B9R-1-Cherry
Base Exposure Time, Calculated: 2.513 secs
Over Cure Exposure Time, Calculated: 0.251 secs, Used: 2.251 seconds
Attach Base Exposure Time, Calculated: 14.077 sec
Attach Over Cure Exposure Time, Calculated: 1.408 secs
Attach Layers, Calculated: 2

Printer Cycle Settings:
Shutter Open Speed : 70, Shutter Close Speed : 60
Pre Exposure Delay (Settle) : 3
Post Exposure Delay (Kick) : 0.2
Post Release Delay (Breathe) : 1
Overlift Cutoff (mm) : 0.5, Initial Overlift (mm) : 3, Subsequent Overlift (mm) : 0.5
Dip (mm) : 0
Dynamic Vat Positioning: false
Job Position - X Offset: 0, Y Offset: 0
Mirrored: false, Show Grid: true

the results was pretty good but whith one defect as show in the picture also my pdm after 7 prints it looks very cloudy I do not expect less for the high lv of the msm i am using.
20150524_155738[1].jpg
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20150524_155642[1].jpg
20150524_160546[1].jpg
20150524_160551[1].jpg
20150524_160558[1].jpg




Best Regards Fernando Ortiz

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panastation
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Re: Priting problems at normal msm

Post#13 » Mon May 25, 2015 2:39 am

ouch
poor pdms.
have u tried to switch primary and secondary monitors. maybe see the grid displayed in your monitor and check for weird things,
i know this might sound dumb but have u updated video drivers- checked for video card issues ect. u could check projector by maybe displaying ure desktop on ure roof and see if it has any weird things** or conect projector to another device*. id try leaving msm at 1 .. calibrating build table well----have enough resin in vat----adding more supports smaller---adding settle time---and slowing down open and close of shutter at 50% both.
doesnt hurt to try...
u nned to change that pdms soon ... im guesin this is ure factory pdms.. to keep testing u could move the projector over
i think u are using 30 xy
chewck this thread-- good luck
http://b9creator.com/forum/viewtopic.php?f=16&t=1923&p=21267#p21267

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Robert Howle
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Re: Priting problems at normal msm

Post#14 » Mon May 25, 2015 2:44 am

You are long overdue for a re coat of the PDMS. This prob has also contributed to your calibration problems.

Robert
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ferograf
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Re: Priting problems at normal msm

Post#15 » Mon May 25, 2015 6:26 am

Robert Howle wrote:You are long overdue for a re coat of the PDMS. This prob has also contributed to your calibration problems.

Robert


Hi Robert the problem is that pdms was new and i burn it almost in just the projector calibration because i start from 0.8, 0.9, 1.0, 1.1 , 1.2 msm , with very bad results as i put in some photos in the first posts, but in msm 1.3 to 1.5 i get better results but my pdms gets burn very fast in this pdms that i show in the pictures i only print two pieces, the rest prints was used for calibration, i have already buy a new vat i think today i gonna recive it to make more test. but i think that maybe the problem is that the projector is defective.

Best Regards Fernando Ortiz

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ferograf
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Re: Priting problems at normal msm

Post#16 » Mon May 25, 2015 10:07 am

panastation wrote:ouch
poor pdms.
have u tried to switch primary and secondary monitors. maybe see the grid displayed in your monitor and check for weird things,
i know this might sound dumb but have u updated video drivers- checked for video card issues ect. u could check projector by maybe displaying ure desktop on ure roof and see if it has any weird things** or conect projector to another device*. id try leaving msm at 1 .. calibrating build table well----have enough resin in vat----adding more supports smaller---adding settle time---and slowing down open and close of shutter at 50% both.
doesnt hurt to try...
u nned to change that pdms soon ... im guesin this is ure factory pdms.. to keep testing u could move the projector over
i think u are using 30 xy
chewck this thread-- good luck
http://b9creator.com/forum/viewtopic.php?f=16&t=1923&p=21267#p21267


Thnks for the advice panastation i will make some new test just when i received the new vat and gonna change the printer to another computer and see how it goes.

Best Regards Fernando Ortiz

Paragdhang
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: Priting problems at normal msm

Post#17 » Sat Jun 24, 2017 3:21 pm

Hi even m printing with relatively high msm of 1.6 and suffer from frequent vat usage..what can be the problem please help

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Metalcaster
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Re: Priting problems at normal msm

Post#18 » Sat Jun 24, 2017 6:32 pm

PDMS fast burn up seems to be caused by the supports being straight up and multiple supports close together...which causes the projector to burn in the supports like on a film... in this case, Pdms.
The solution is to angle the pieces more so that the supports are at an angle. This slows down the deterioration of the pdms.

Large , thick parts or supports can cause the pdms to be damaged very quickly.

Moving the parts around and not putting them in the same spot also helps as you are distributing the Camera's projection more evenly.

Paragdhang
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Re: Priting problems at normal msm

Post#19 » Mon Jun 26, 2017 9:49 am

Hi,
Thank you for your reply but my question is do we have to increase the msm of the lamp as the lamp gets older??

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Robert Howle
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Re: Priting problems at normal msm

Post#20 » Mon Jun 26, 2017 12:33 pm

When u use the default settings created by the software for exposure times, etc. Then lamp aging is done for you.

When u change MSM, fade, balance, and slope, etc. in the printer manager and "save" your changes then the lamp aging continues to work.

Robert Howle
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