DIY Replacement Filter Cartridge.

Darn Pool and spa filters are expensive. So I created these. Printed in 2 halves, fill with generic pillow filler or "poly fill", place both halves together and insert into your pool/spa filter holder. There you have it a cheap replacement for those expensive pool filters.

The filter this replaces is 127 mm diameter with a 54 mm hole and 13.25" (336.55 mm) tall.
You can print this if you can print something 170 mm tall.

Some of the numbers this filter are know as are :
FC-2375
PRB25
C-4326

YOU MUST PRINT IN ABS or the cage will degrade in 1-3 months.
DO NOT try to use PLA.

Print with solid base on bed and turn on supports.

I printed it and due to the retraction and slow printing (it took 26 hours to print), It didn't meet my expectations. I will be modifying the design to make it stronger.

UPDATE: New design, thicker, MUCH stronger.
This is the craziest recipe for print settings ever!, but WOW it printed incredible!

Printed in ABS using

Simplify3D users download the .fff profile to print from
[ABS.8 (Pergo FilterPrint).fff] profile that I printed with
.8 mm nozzle
270C (Yes thats right 270c)
.5 mm Layer height (Yes software will complain of this layer height with .8 mm nozzle)
! NO Extraction ! (The stringing helped the print with supports)
30 mm /sec print speed Print was about 8 hrs. 231.5 g of filament
100% infill
3 shells (top bottom & sides)
85c Bed temp, Layer 10-75c Layer 20-70c
!! Supports are ONLY ever other layer!!
!Supports with a .8 mm nozzle every layer cause all kinds of problems!

Printed on a Robo3D R1+ (e3Dv6 hotend) WITH NO PLASTIC or Heat cage!
using the 270c I got a perfect print in open air and it's very strong.

Quite a cleanup job popping out all those supports. But mission success, I have a filter in my spa now. Verify one layer of the base before committing the full print. My 54 mm hole didn't fit on the 54 mm spindle. My printer needed calibration to get the size right. To give others some flex room I changed the inner hole to 56 mm in the model. The original filters are slight rubber so they stretch a bit around the spindle, something that ABS can't do.
I'm Printing my 2nd filter now. My spa uses 2 filters, so I have to print 4 of these.