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Old 09-16-2014, 06:08 PM
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Rvjimd Rvjimd is offline
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Default Re: Ny-Lint Mobile Dragline Conversion

Steve, those are NICE looking!

Question for you machinists - is the order of my steps correct for making a pulley? I want to make two new pulleys for my boom tip and put holes around the outside of the wheel. I know it makes a difference depending on what is being made and with what equipment.

Here is what I think I'm going to do, but half the time (since I'm still learning) I get to a step and realize that I should have something else first or in different order...

Chuck the raw part in the three jaw
Face
Center drill and ream to 1/8" I want a final I'd of 1/8" for the steel rod in the boom tip
Turn the groove in the pulley
Here is where I'm unsure
Add the relief and center hub to the first side
Part off just oversize on the width
Drill the bolt circle holes around the diamete
Put it back in the three jaw, this is where it get tough because now I'm messing up the outside with the three jaw.
Add the relief and center hub to side two

I probably omitted a step here. Should I be using some type of arbor thru the center hole?
I am drilling my bolt circle holes on the vice on the drill press.

Is there some high school machinist text boom that would help me with this sort of stuff?

Jim
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