Hi-Tech Diamond acrylic backing plates are made out of acrylic and provide an extremely flat surface for disc application. Hi-Tech Diamond 3/8" acrylic backing plates provide an extremely flat surface to back diamond smoothing discs, electroplated diamond discs, Tech-11 polishing pads and final polishing pads.
All acrylic backing plates h
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Excellent quality
My final shipment of ceramic backing plates came in today. They are excellent for the amount of area needed for the grinding and polishing of the stones that I have. So far the are well balanced and easily installed with the Diamond disc and other smoothing disc that I have and they are really not expensive for the average rock hound to have a good inventory of desired grades of polishing disc. Very easy to install on one's flat cabber or the flat all you need lap machines. So when you purchase one of these machines, I suggest that you invest in several more grades of the Electroplated Plated Diamond Disc to go along with all of the Acrylic Backing plates. You never know when you have to change out a complete disc and not have it available.
Sorry no pictures yet.
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Carl · October 15, 2026
These are needed for the extra discs I purchased, very pleased they are affordable.
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Corely · April 28, 2026
Weather related
Weather outside got cold again and I haven't used them at all, they look good on the desk tho