Budget roughly one set of metal-bond plates per 150-300 sqm on normal concrete, and per 80-150 sqm on hard industrial slabs. Track wear on your first job and extrapolate.
A practical estimate: one set of metal-bond grinding plates lasts about 150-300 square meters on normal residential concrete, and only 80-150 square meters on hard 6000+ PSI industrial slabs. PCD coating-removal tools last much longer, often 800-1500 sqm depending on coating type.
Track hours per set on your first job, then extrapolate. For a 1000 sqm polish, plan 4-6 sets of metal-bond plates through the grit sequence plus one set of PCD if coatings need removal. Long-life trapezoid segments lower cost per square meter on large slabs, while PCD tools pay back quickly on coating-heavy floors.
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.
