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Why is the tank filling operation so slow?


#1

Today we installed a new Flexible 80A cartridge and tank in our ~4mo old Form 3. We are running into a ton of issues getting the tank to fill; we are multiple hours in and the operation has aborted or timed out multiple times. We have:

  • Shaken the new cartridge
  • Inspected the bite valve and verified it is fine
  • Verified that the vent cap is open and slightly unscrewed
  • Rebooted the printer
  • Run the resin level calibration routine

I realize that the system drizzles in resin relatively slowly and periodically rechecks the tank level. I just don’t understand why this process takes so long on a new tank, and can’t seem to find a consensus on what is common or expected. Can anyone here shed some light on this? It’s extremely frustrating and kills our workflow; we are 5 hours into getting a new tank set up for a print job that is only supposed to take a few hours total…

EDIT: we are running firmware version rc-1.13.3-679


#2

While flexible and elastic resins can take a while to fill it’s far from 5 hours.
If the tank is a new one just drop a bit of resin directly from the cartridge onto it. Can’t recall exactly how much but you can do it in stages and check every time. While a bother at least it will let you go through that print.


#3

Well, my last bottle of Durable didn’t flow at all. The bite valve appeared to be fine. I considered giving the cartridge a squeeze, but figured I’d end up squirting resin all over my workshop. Instead, I took a #11 Xacto knife blade and ran it into the slit in the valve (slit-wise orientation). Poked it in about 1/2 the length of the blade. Bite valve started to work as expected, including (much to my relief) still able to maintain a drip-free closed state…


#4

Yeah, sometimes resin gets harder (kind of cured) on the bite valve and one needs to poke around. It’s an issue even with unused cartridges for some reason.
I had a few like that in different materials, no idea why.