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how lens manufacture sand best in guinea

Resin Casting Lenses 5 Steps with Pictures Instructables,Polishing lenses by hand seemed like waaay to much work so I 3D printed a conical jig that fits into a drill and only requires me to hold sand paper in one hand while the lens rotates beneath This setup mostly worked however I recommend spending double the amount of time you think you need at lower grits really laying a solid foundation ... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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