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Mirka Polarshine 45 is a coarse, fast-cutting water-based and silicone-free polishing compound developed for the most demanding industrial and marine applications. Engineered to remove deep sanding marks (P600 and finer), it’s perfect for restoring gel coats, composites, and high-gloss finishes.
Storage temperature: 5° to 35° C. Keep from freezing.
Key Features:
Water-based and silicone-free
Coarse, fast cutting
Perfect deep gloss finish
Removes sanding scratches from P600 and finer
Designed for hard surfaces and coatings, especially within the marine sector
Used in both production and restoration processes
Ideal for one-step polishing of white and light-coloured gel coat surfaces
For darker colours, a second step with Polarshine 10 to remove swirl marks is advised
Polarshine 45 and Polarshine 12 can be used as a 2-step process for automotive applications
Additional Information
Best used with Mirka Lambswool Pad or Heavy Cut Foam Pad
FEATURES
Water-based and silicone-free
Coarse, fast cutting
Perfect deep gloss finish
Removes sanding scratches from P600 and finer
Designed for hard surfaces and coatings, especially within the marine sector
Used in both production and restoration processes
Ideal for one-step polishing of white and light-coloured gel coat surfaces
For darker colours, a second step with Polarshine 10 to remove swirl marks is advised
Polarshine 45 and Polarshine 12 can be used as a 2-step process for automotive applications
Still getting to know these products and their use (using on wood and epoxy), but so far very pleased with the results. Non messy and beautiful streak-free results, takes it to the next level from just sanding and polishing, even when compared to a 2000 or 3000 grit pad.
A
Adam Lucke
Mirka 45
Excellent product for compounding oxidised gelcoat. Does an extremely quick job with minimal exertion. Fantastic mirror result
I was rather impressed with ceramic discs in my orbital sander that I used, to sand down the river table I am making. I started with 40 grit and finished with a 1000grit. I was surprised how quickly the discs cut the timber and the epoxy resin and the discs lasted very well too. Superb finish, very happy. I will be using these discs again.
Naturally we’d like them to last longer, but we get between 250 - 350 square metres out of a pad generally… they make it easier to control your machine as it isn’t as hard on the walls. We trialled it for a bit and now it’s the standard for us to continue to use them…
Absolutely stellar customer service, well above par and enjoyable as much as helpful, and the products are 10/10 - will be back again and again and again…
Mirka Roundy Hand Sanding Block Kit
Ian Douglas
Mirka AROS-B is a sensational sander that will save untold time and effort!
I spend hours on manually sanding the curves in the depressions I route in my charcuterie boards as there's just no other way to do it, using the AROS-B sander I can now do a full board in around 20 minutes and then have it ready to oil! I estimate it's saving me at least 3-4 hours per board.
Expensive tool but it reall works fantastic with a lot of grunt, and saves an incredible amount of time and effort! I love it so much a week later I bought the AOS-B as well!
Couldn't recommend this unique sander highly enough for fiddly awkward sanding jobs!
I received my mixed box of 125mm Mirka Galaxy discs from Best Abrasives a little while ago...that stuff is amazing!
I let the 80 grit go on a piece of rough sawn Camphor Laurel and it was smooth in a couple of minutes. Very impressive compared to other brands...I'll be back for more! 🙂
Mirka Galaxy Sanding Discs - 125mm/5"
Don Messenger
Mirka Abranet Ace Ceramic sanding discs
I was rather impressed with ceramic discs in my orbital sander that I used, to sand down the river table I am making. I started with 40 grit and finished with a 1000grit. I was surprised how quickly the discs cut the timber and the epoxy resin and the discs lasted very well too. Superb finish, very happy. I will be using these discs again.
