NOTE： we dont ship the item to PO BOX address， and we only ship the item to English address, so please leave us your physical English address when you pay. WD165 grinding machine universal radius angle wheel dresser 165mm grinder First, the technical description 1.WD165 universal grinding wheel dresser for a variety of surface grinder and universal tool grinder, curve grinder, trimmed by a straight line and arc integrated shape of the wheel 2. Sliding the base design, with the swivel seat and the upper slide, can be trimmed any straight angle and arc composed of a variety of truncated grinding wheel Second, the product specifications Center high: 165mm Measure the pin diameter: Φ10mm Gold knife swing the maximum distance: ± 14mm Dressing wheel maximum diameter: Φ205mm Rotary scale reading accuracy (per cell): 5 Feed the maximum amount of movement: 25mm Push to handle the scale of each grid: 0.01mm Product Outside Package Size: 43 * 21 * 27cm Weight: 5kg Third, the calculation formula Trimming convex R arc: H = L + R Trim N R: H = L-R H = distance between the two poles R = the radius of the arc to be trimmed L = distance from the tip of the jewel to the reference plate Trimming example (for example): Convex R30mm Such as measured L = 60mm Calculate H = L + R = 60 + (+ 30) = 90mm minus two quasi-tip diameter (10 × 2) = 90-20 = 70mm Will be 70mm block gauge in the middle of the two quasi-shoot, can be trimmed convex R30mm Dressing example: concave R30mm (10 × 2) = 30-20 = 10mm will be 10mm block gauge in the middle of the two quasi-tip, can be trimmed Concave R30mm