Stretched prints with FEP VAT
Posted: Wed Jan 10, 2018 2:13 am
Hello, sometime ago I got the LittleRP from the original kickstarter and never quite got to use it until now, I bought a FEP VAT (flexvat) when i decided to finally start learning how to use the thing. I bought FunToDo Snow White resin and added red pigment. My prints are coming out beautifully except they are stretched along the Z Axis only.
I am using Creation Workshop and I've tried tons of different exposure settings and messed around with the lift speeds, even changed the FEP film thinking that was the case and it doesn't seem like it is. I've tried different approached to adding supports to my test model and it doesn't seem like it's making any differences. I have noticed that every time the build plate lifts, the FEP gets pulled a little but I can't seem to be able to get it to stop doing that, so I'm not sure if that's what's stretching my prints. Ultimately can't figure out what the problem is.
If I were to guess it must be a Z stepping issue, but I haven't got much of a clue how to fix that. I let a stretched print finish and it stretched so much it hit the limit of what the machine is capable and started crashing at the top of the machine. In Creation Workshop it shows the model shouldn't be anywhere close to the top.
Here's a gallery of my settings/prints if that helps at all (I probably shouldn't have printed some of these so big when testing)
I am using Creation Workshop and I've tried tons of different exposure settings and messed around with the lift speeds, even changed the FEP film thinking that was the case and it doesn't seem like it is. I've tried different approached to adding supports to my test model and it doesn't seem like it's making any differences. I have noticed that every time the build plate lifts, the FEP gets pulled a little but I can't seem to be able to get it to stop doing that, so I'm not sure if that's what's stretching my prints. Ultimately can't figure out what the problem is.
If I were to guess it must be a Z stepping issue, but I haven't got much of a clue how to fix that. I let a stretched print finish and it stretched so much it hit the limit of what the machine is capable and started crashing at the top of the machine. In Creation Workshop it shows the model shouldn't be anywhere close to the top.
Here's a gallery of my settings/prints if that helps at all (I probably shouldn't have printed some of these so big when testing)