Fluffy mdf

[JAZZCNC]

Unless the MDF is damp you shouldn't get fluff no matter the manufacturer. If you getting fluff then your cutting wrong for the density of that material, the Medite MR will just be a different grade or density and you've got lucky on Feeds etc.

20mm/s is far to slow for MDF not matter what size cutter or DOC and even if you were cutting at 3000 Rpm which again is ridiculously slow for MDF or wood it's all wrong.

Every machine needs feeds & speeds tweaking to suit it's build but even allowing for that these feeds are way off. I think you'll find the cutters will wear very quickly.

Give some details of cutter and an idea of the strength of machine, also spindle your using IE: picture and will suggest some feeds to try.