Thickness Sander

Shop Built Sander
Thickness Sander
Your website article says the motor RPM is 1750 with 2" pulley on the motor and 5" on the drum. Am I calculating the RPM of the drum correctly? 1750 x 2/5 for a drum RPM of 700? With a 5" drum, surface FPM would be 700 x (5 x 3.14) then divide by 12 for ~915 FPM surface speed. This seems slower than commercial drum sanders (which really means nothing)
How to use a Delta drum sander

• 2:12 drum sander
• 2:07 24 Inch Drum Sander

• 2:54 home made drum sander

• homemade drum sander running1st test