Recent content by Jimbo51

Many mold shops are using SolidWorks and exporting to Mastercam and running Mold Plus inside of Mastercam Jim

I also think that either 15/5 or 17/4 will give better surface finish's than 440 or 440c. 440 will go higher on the C scale if you need it to though. How hard do you need to be? Jim

H900 is simply heatying to 900 deg for one hour and getting about 38 or 40 on the C scale....send it out to the heat treater and have him precipitation harden either 17/4 or 15/5 to 180/200ksi and it is still quite machinable...I do this all the time with turned parts to avoit the warpage Hope...

Unfortunately there is no one source for this information as is is reall a combination of material, machine regidity, insert or tool geometry, coolant, depth of cut, diametral depth of cut, tool material, fixturing, horsepower. All of these factors must be considered to generate good feed...

I've made a number of vacuume fixtures and I've found that the size of the holes really makes the difference. 1/32 dia works well...about a hundred thou apart Also when programming, use HSM, large removal rates through light cuts. That way you are not inducing stress back into the work...

15/5 or 17/4 in commonly heat treated to 180 - 200 ksi and would most likely work well for what you want. It's common to Jim

Plus or Minus four tenths is doable on almost ANY lathe!! I would also agree that for a seal this is most likely a typo Jim