Bring your own bucket
A cyclone without a tank — you supply the bucket, and it costs a fraction of a complete unit.
A cyclone without a tank — you supply the bucket, and it costs a fraction of a complete unit.
A cyclone separator head designed to sit on a bucket you already own.
Debris spins out of the airflow and falls into the container; the vacuum sees only fine dust. Buying the head alone saves most of the cost of a complete cyclone unit.
The bucket is under suction, so it must be rigid. Thin plastic collapses. The seal between head and bucket also has to be good enough that the cyclone works rather than simply passing air — a rubber gasket or a bead of sealant is normal.
The cheap plastic part that decides whether your vacuum can be connected to your sander at all.
Drops the bulk of the debris into a bucket before it ever reaches the filter.
The bulk option: enough parts for two service intervals, which is how consumables should be bought.
Joins two hoses into one long one — cheap, useful, and one more thing that can part under pressure.
The cheapest maintenance on this site, and the one that decides whether a steam cleaner reaches year five.