I am not a fan of downspirals for basically anything (though we run compressions so sort of) but we have a bunch of MDF (devils wood) to run in the future and I am trying to get as close to a flawless finished surface off the machine as possible. No fuzzies on the edges, little to no sanding required before primer. I dont mind taking and RO and knocking down the top surface before it comes off the machine which is what weve been doing. Virtually anything you seem to find and a couple of tooling suppliers have stated that a downspiral will give the best results. I only have a few 1/2" solid carbide down spirals and havent loaded one up to try (we will be running either 3/8" or 1/4" for this work). Even with smalll diameter compressions in MDF we dont have any luck clearing the cut (packs in pretty tight) but I was hoping to avoid the compression and having to cut so far into the spoil board. Have been running straight 2 flutes but still a bit of cleanup.
What tooling have you found to give you the cleanest possible finish on MDF (top surface, bottom surface, and as little fuzz as possible).
Even though we could single pass I was wondering if multi-passing 1/2" and 3/4" MDF would help clear the chips as well as clean the cut. Hoping to minimize testing/trying different setups a bit.
Thanks.