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Build Your Own SLA/SLS • WHAT is going on? why? help please
Page 1 of 1

WHAT is going on? why? help please

Posted: Thu Mar 24, 2016 11:15 am
by torla91
Hi folks, i'm non able to understand what is going on in my prints. When i print dental model i have no problems, when i try to print something else i can not obtain anithing useful. I tried different exposure times but this are the result:

















Why i do not obtain a corret print? in each picture is also indicated the exposure time.

Re: WHAT is going on? why? help please

Posted: Mon Mar 28, 2016 3:17 am
by mrelhashemy
What resin do you use??

looks like the B9C yellow resin?

Re: WHAT is going on? why? help please

Posted: Tue Mar 29, 2016 5:53 am
by torla91
I am using a STANDARD BLEND unpigmented resin. this are the only info that are given in the datasheet (i thihnk).
This is the link to the vendor :


thank you for your help

Re: WHAT is going on? why? help please

Posted: Mon Apr 04, 2016 9:46 am
by mrelhashemy
I think you just need to add more pigment.

Re: WHAT is going on? why? help please

Posted: Thu Apr 07, 2016 6:24 pm
by redonix76
Always keep in mind that thinner parts will need longer exposure time due to smaller concentration of light/UV. Also like mrelhashey says, add some pigments because transparent resin tends to have light bleeds and the concentration of the focused light will be less.

Also very important is learning to slow things down and not rushing the prints. I used to do 100mm - 150mm/minute for lift speed which speeds up the print but causes allot of failed prints for thin parts sucks as thin walls and supports. Now I only go 15mm - 30mm/minute. it's slower but I get a much lower fail rate especially for prints with allot of supports. Actually super slow lift speed seemed to help out in many failed print situations...along with proper exposure time of course. hope this helps!