RobbieB
Rodentus scientificus
Since I have a crap drill press, I made up a converter in Excel so that I only have to crank the table one way to drill ovals. Basically, you input the starting pitches and desired oval angle, and it spits out the pitches needed to line the ball up with the oval vertical. Align the ball with the oval line vertical, drill pilot, crank press forward only and drill 2nd hole for oval thumb. Much more accurate on an old table than trying to move both sets of pitch cranks for the 2nd cut.
The Excel file should be pretty self explanatory. Enjoy!
The Excel file should be pretty self explanatory. Enjoy!
