Strip thick build-up with PCD tooling at low speed in shallow, overlapping passes — do not force the full 2-3 mm depth in one cut. Shave the coating layer by layer and vacuum constantly.
To strip 2-3 mm of old epoxy, polyurethane or paint build-up, use PCD tooling at low speed in shallow, overlapping passes. Do not try to take the full depth in one cut — shave the coating layer by layer and let the PCD do the work.
PCD-coated WerkMaster tooling and Redi-Lock PCD discs are designed for epoxy, glue and thick coatings. For very soft, rubbery mastic, a double-paddle PCD works better than single bars. After stripping, follow with 30/46 metal-bond grinding to remove the last coating film and profile the concrete.
A: Only when the slab is already smooth and you are refining. On rough or ground-new concrete, skipping leaves a scratch pattern finer pads cannot resolve.
A: If segments glaze and stop cutting, the bond is too hard; if they wear flat in under half a set, it is too soft. Match bond to concrete hardness.
A: Dry grinding with a HEPA vacuum is standard on polished concrete jobs; wet grinding is mostly used for stone and edge work to control dust and heat.
A: Change the whole set together once segment height drops by half or the cut rate slows. Mixing new and worn plates causes uneven scratch patterns.
Choosing the right bond, grit and technique for your concrete job saves tooling cost and avoids rework. Match the tool to the slab, work in the correct grit sequence, and keep plates balanced — the floor will tell you when you are ready for the next step. Contact JOY TECH for tooling recommendations matched to your machine and concrete hardness.
