Thinking of a 3D printer

[Tim Marlow]

I was using a paint filter Tim,as supplied with the printer... which do you think that would be?

Depends on the paint type If it’s for acrylics then it would be a hydrophilic type. If it’s for lacquers then it would be hydrophobic.

This came to mind because at work we used to use IPA to wet out air filters prior to forward flow testing (shows filter efficacy before use). We had to use this as air filters are very hydrophobic. They will not allow water through at all. The testing regime was changed later, to something called bubble point testing that worked on pressure decay, so we could use purified water instead…..bit of a shame really because I used to use the residual out of date IPA as part of my vinyl record cleaning regime.

[Gary MacKenzie]

This is my IPA/Resin filter

https://www.amazon.co.uk/gp/product/B0829NCXLB

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water washable is something I haven't used, and have no intention of trying, having seen too many horror stories about it being harder to deal with than isopropyl.

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Most of the ''gurus'' suggest coffee filters for filtering with a normal funnel system.

[Tim Marlow]

That mesh should easily remove cured resin bits Gary. Looks very like the tamping disc that came with my espresso maker. Must admit, the first thing I would have tried if I was doing it would be a percolator filter. Gravity feed would be pretty slow though.

[Neil Merryweather]

I have this too, but it doesn't take very long before it clogs. Maybe I have to persevere

[Tim Marlow]

I have this too, but it doesn't take very long before it clogs. Maybe I have to persevere

Just set it up and leave it overnight. Failing that, because they are quite fine, just buy some coarse filter papers (100um) and run one over the other to take out coarse particles first, so protecting the fine filter from blinding. You could also cut up an airbrush booth filter and use that at the bottom of a funnel. It should do what you want.