How much time to grind
Posted 10 January 2013 - 05:52 AM
Posted 10 January 2013 - 07:45 AM
1/2lb. should be more than enough for a 6", You will find as you go smaller in grit size the "WET" will last much longer. As far as the time it really depend on a lot of factors (Grinding style, pressure, E.T.C) I have found one good habit to have is not to go to fast with the grind, especially at finer grits and polishing.
Keep us informed!!!!
Posted 10 January 2013 - 10:36 AM
Posted 10 January 2013 - 12:09 PM
Posted 10 January 2013 - 11:48 PM
Posted 11 January 2013 - 04:47 AM
i dont have any words to say. i lost all my hard labor,time and carbo #80 and money too.
For me it took 4 hrs to grind and focal length was exactly 1200mm. I used two blanks of plate glass. Mirror was 19mm thick and tool was 12mm thick.
Pressure was neither too hard nor too light, it was medium.
Finally i again need two blanks of glass
Posted 12 January 2013 - 01:06 PM
I have used a curved tool on a fresh blank before, so maybe some cost and labor are not lost.
Posted 12 January 2013 - 01:35 PM
I hope you can obtain more glass and supplies; and that you won't be discouraged from letting your son continue to be involved.
The tool should be reuseable.
Posted 14 January 2013 - 08:39 PM
Posted 14 January 2013 - 11:59 PM
Posted 15 January 2013 - 12:02 AM