|Forum topic by hairy||posted 06-23-2011 05:49 PM||1600 views||0 times favorited||11 replies|
06-23-2011 05:49 PM
I’m attempting to make a thin parting tool. Thanks, Capt. Eddie!
I have encountered my first design change opportunity.
The hole in the handle is my problem. My original plan was to use 3/16” brass rod to pin the handle on, similar to a knife handle. Instead of laminating handle grips to the tool blade, I cut a mortise into the wood to accept the cutting blade. I used a glue that I have had success with to glue the pieces together, and it has held well, in fact I have used this tool as it is.
I was trying to drill through the wood and metal when my troubles began. The blade is a lawn edger blade from Home Depot.
I don’t know what kind of steel it is, but it’s harder than Chinese arithmetic. It did not drill the metal at all, and my immediate reaction was to apply brute force. Really crank down on the drill press handle. I found out that’s a good way to drill a 17/64” hole in walnut with a 3/16” drill bit. That info might come in handy someday, but it ain’t today.
I did look at a drill speed chart to see what speed and bit combination to use, but it only had 1 speed listed (1800rpm??) for steel. I vaguely remember something about stainless needs to be drilled at a slow speed, but this steel is magnetic. I was using a good bit.
Most tools of this style have a short handle to be held in one hand. I like this big handle, I can hold it in one hand if I want, and still get the good control of two hands when needed.
I do have a Plan B, but I still need to drill. Can anyone tell me what speed and bit will do this?
-- on Wednesday's I go shopping, and have buttered scones for tea...