[ATM] flat query

[shyam rathod <iloveyawli@yahoo.com>]

dear list

 was under the process of producing 4"flat  i have some problrm with these
  A+B= -9(concave rings)-----------------------------------------------------------------1
  B+C=-5(concave rings)and +3 (convex rings) like 5 rings inside are---2 behaving like concave and outside 3 rings behave as convex thus when i put pressure on the bullseye the ineer rings travel inside while outer 3 rings travel outside.
  C+A= -11(concave)-----------------------------------------------------------------------3
   
  thus i am confused with equation 2 what do i consider it as -5+3 ?????
  if i consider it -5+3 then i get A=-9(4.5 wave concave), B=0(0wave), C=-2(1wave concave)
   
  thus B according to above assumtion is perfect flat that i dought
   
  another problem while lapping(polishing) i am not able to change the situation after much of polishing i still see the same number of rings on A+B=-9 so i am not able to make A flat even after considerable amount of time what do i do?
  do i use a hard lap while now iam using pure coal tar i am not mixing rosin sould i paint the existing lap with rosin so that it is hard and then cold press?
   
  will hard lap do fast polishing? 
   
  is it that if we mix more water in cerium oxide while polishing it polishes slow should it be a thick paste for fast polishing?
   
  what is the effect of adding soap to the water and cerium oxide what does less amount of soap or greater amount of soap do to the polishing ...does polishing become slow or fast with addition of soap.
   
  what is effect of addtion of inert agent like sugar to the polishing liquid what does it do (as i have read in ingalls that adding sugar increases density but what is effect on rate of polishing)
   
  shyam rathod(india)
   
   
   
   
   


		
---------------------------------
 Yahoo! DSL Something to write home about. Just $16.99/mo. or less
_______________________________________________
ATM mailing list http://www.atmlist.net/