An electric sander will make this job go much faster image 1.
What grit sanding block for laminate countertop.
However if instead of using 180 grit after the 120 grit you had sanded with the even finer 280 grit then the 120 grit scratches would still be.
Once the countertop is dry and the blemishes are mostly gone sand the entire surface.
The quartz surface should now be nice and smooth.
Use a fine grit 200 to 220 sandpaper to remove any rough spots on your countertop and backsplash.
Noticeable hairline scratches will appear but this is ok.
The downward angle will prevent the laminate from lifting from the counter.
The best tool for this purpose is a 6 inch random orbit sander guided in slow overlapping passes going with the wood grain.
Sand the edge of the laminate with a fine grained abrasive block.
This will eliminate the small chips that occurred during the cut.
Be sure to choose a stone polish for use with quartz and follow the instructions on the product s label.
Clean the quartz countertops with a damp rag followed by a dry rag to remove all excess particles created by sanding.
Attach 120 grit carbide sandpaper to an orbital sander.
Using a very fine 320 grit abrasive sand the entire countertop and wipe it clean.
Be sure that you ve removed all stains and sanding dust.
Hold the sander at a 45 degree angle pointing down toward the ground.
Remove the sanding dust with a damp cloth.
Wipe away all dust with a tack cloth.
Use a sanding block to get the edges of the counter image 2.
Start with 100 grit paper which should eliminate any remaining marks then finish with 150.
It s a good idea to sand any surface before painting it.
Sand the laminate to smooth the edges.
The paint will fill them.
100pcs 5 inch 8 holes sanding discs 40 60 80 100 120 180 240 320 400 800 grit assorted sandpaper hook and loop random orbital sander round sand paper by lotfancy 4 6 out of 5 stars 1 116 14 59 14.
Remove the sanding dust with a slightly damp rag.
For example you start the sanding process with 120 grit and then sand with 180 grit.
Buff the countertops with a polishing pad and stone polish.
Sand the laminate surface with a 120 grit sanding block until the laminate appears dulled.