3D printed parts in Kalk Slurry

[chimbo84]

@Randy Holmes-Farley I am wondering if you have any thoughts on using 3D printed parts in my kalk reactor. I am trying to create more of a slurry and have printed some paddle wheels for my Avast K1 using PETG and am curious if I should be worried about them leaching or breaking down. If so, would ABS or nylon be better?

 

[T-J]

PETG is the recommended printing filament for anything gong in our tanks.

 

[neonreef3d]

Any part going in the water HAS to be printed with 100% infill.
Otherwise the water will seep into the hollow of the part and fester causing bad bacteria growth.

 

[chimbo84]

PETG is the recommended printing filament for anything gong in our tanks.

I understand that but curious if that holds true for things going into a saturated Kalk solution. Will the extreme alkalinity and caustic solution create any issues?

 

[T-J]

I understand that but curious if that holds true for things going into a saturated Kalk solution. Will the extreme alkalinity and caustic solution create any issues?

That I don't know. Not sure at what point PETG would start to break down.
Is there an issue with the paddles that came with the stirrer? I run one of their kalk stirrers with about 3" of slurry at the bottom without any issues.

 

[neonreef3d]

I understand that but curious if that holds true for things going into a saturated Kalk solution. Will the extreme alkalinity and caustic solution create any issues?

If you have an Enclosure for your printer, the layer adhesion will be at maximum potential. Having said that, Printing the part at 100% infill will make it as solid as possible. PETG has pretty chemical resistance as far as non solvents and non acids are concerned .