I needed a funnel able to accept fine filter discs as well as conic paint filters.
This way I can both filter my resins and my isopropyl alcohol.
I designed one version with steps which allow a great match to gallon jug mouth and typical resin bottle mouths, and have another funnel with a tapered profile for standard use.
Both have an incorporated side groove to receive air pressure during pours.
It also has a file for a printed perforated disc, to print this with your desired perforations, in slicer do zero top and bottom layers, do 10- 15 outline layers, and use your infill to make your perforations, a 40% fast honeycomb works great. This will support your filter discs.
And to keep it all down I also designed a retainer ring.
Here are some of the filters I use (affiliate links)
Fine Filter Discs 4-7 micron : 4-7 Micron, Grade 595
Medium 50 micron Paint Filters: https://www.amazon.com/gp/product/B08H1QHNNS/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=sl1&tag=petersolomond-20&linkId=1939d2ef5d880021171c8723bdfde211&language=en_US
Regular 190 micron Paint Filters: https://www.amazon.com/gp/product/B08H1QHNNS/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=sl1&tag=petersolomond-20&linkId=1939d2ef5d880021171c8723bdfde211&language=en_US
If you make one please do post your make and comments!
I printed in PETG and used 3Dgloop PET to smooth and seal the inside, but this may be excessive.
thanks
| filter_disc_V6.STL | 34.5KB | |
| retainer_V6.STL | 2.4MB | |
| smooth_funnel_V6.STL | 2.0MB | |
| stepped_funnelV6.STL | 3.2MB |
