Try the pressure washer if possible, i just do that now after every use and have zero clogs. 1 micron paper on top of 5 micron plate with a sub micron filter chamber between them and honey pot.
I think it depends whats clogging it. If its powder then thats different than if its fat= use more prefilters, the sintered is for final cleanup.
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I run 3 Prefilters so my disk never see powders and Iâve never had a clog and I run super cold every time
Powders getting on the disk plus cold equals clogged
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Edited into thumpernese
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Hey Boss,
Just hazarding a guess, if your putting them flow side facing down in the ultrasonic bath, it seems like, based of what youâve described that something non dissolving is being compacted into the pours gravitationally, and compounded by the vibration? Baking it in the oven caused it those potential deposits to harden?
If you put them flow side down in the sonicator, you should be fine, allowing non dissolving particulates to flow out and downward? Myrdinâs process announces that they are flow side facing upward and he has had no such similar issues?
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I have them sintered facing down so the debris falls out
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Do you wash them with etho before and after the sonic cleaner?
How long did you dry them for?
are you sonicating in EtOH? You donât have to fill the entire sonicator, a ziplock bag will do.
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I just stick it in the sonicator which its full of iso.
I also leave them in my vac oven overnight since iso has a lower boiling point and i imagine it has a hard time evaporating throughout the sintered side of the filter
Anywhoo
I think i may have baked something inside the disc somewhere. After sonicating with acetone and pushing n2 through the mesh side 3 times i kept having yellow waxy residue ozzing out the sintered side (photo up there showed it ^^^). At that point i put it back in my filter stack and ran a huge tank of 65c butane over it. Now they work completely fine and i went back to papers over the sintered side of my disc below my granulated media. Dhurr 
Im 3 batches (90lbs) in and it flows through the filter full blast just how i like it when i do my remediation
Hoping i solved the problem. I literally think i âbrokeâ the fitler and fixed it
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You need to wash them with alcohol before and after the sonic cleaner. Youâre not really cleaning them.
Again,
Use ethanol, preferably, isopropyl is meant for cuts, abrasions, and cleaning. 200 proof ethanol should be what you use. Isopropyl is also a contaminant.
Rinse well before the sonic cleaner and rinse well after. And change out the alcohol in the sonic cleaner too, bet thatâs making it worse, too. I have discs that are almost three years old and I donât have a single problem with them, I even have a 0.2 micron disc thatâs two years old and it works just like new.
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Thanks cheif!
I wasnât when i had this issue. I did last time. I will switch to etho from iso. And set my little rotovap up to clean the etho each time