But I agree they should have made the storage case big enough to hold the sander … On top of decorating, I also do an awful lot of spray plastering and choosing the best possible kit is very important to me. mirka deros with the festool sandpaper leaves alot of dust as the festool … Before buying an extendable dust free sanding unit I had reps visit me from both Mirka and Festool. The rubber tube coupler only makes it worse. Re: Festool or Mirka sander? This question is directed to anyone who actually uses a festool sander or mirka ceros sander with vac attachment on drywall repairs and drywall prep. Re: Festool or Mirka sander? mirka deros has one advantage, sander is light, so if doing above the head work, work at odd angles, this is the go to unit, but cant work at 10000rpm, 9000 rpm, 8000 rpm for long, not a selling point. Tonight I went out to the shop and measured (metric and imperial; but thats another thread ) The OD of the Mirka dust port is 1-9/16 or 40.5mm and about 1-5/16 or 23mm in length The rubber end on the Festool … Festool Planex Vs Mirka Leros . My name is James Brett and I’m a professional decorator. I am ready to purchase but I do not … iv got festool rts 400 festool midi extractor and mirka ceros i can go onto most jobs commercial or private and do 4-5 hrs of sanding i know 2 things 1/ physically i could not get through … To me the Festool connector looks very bulky for such a small sander. This may be why Mirka suggests threading the hose directly onto the sander; this eliminates bulk.