04-17-2014, 02:34 PM
i have a project where I need to drill about 40 holes, 5/8" diameter, 20 will be 1" deep and 20 will be 2" deep, all at an angle of 45 degree in respect to surface. All these in wood, I am not sure what type but the wood used in construction. It doesn't appear to be a hard wood, my guess it is some cheap wood used by the builders.
I have used drill bits before, but never a spade blade. I have some basic question, such as do I need lubrication? I have 2 drills, one Hitachi corded and a Bosch 12V lithium. I guess both are able to do the job, will see which one feels better in my hand. I have 2 sets of spade blades. The Craftsman has a sharp tip, but no thread, so I need to push it. The Bosch blade has a conical tip with thread, so I guess it will self advance somewhat, but I still have to push I guess.
My questions really are if I should use some lubricant to keep the blades cool and finish the 40 holes without destroying the blade. also, it would be nice to get smooth edges with minimum chipouts.
I guess it would be best if I get a piece of wood to practice first before I start the real work. I can take my time, I don't have to finish this quickly, so I can take a break in between if the blades get hot of if I need to recharge in case I decide to use the Bosch drill.
Any other advice or tips is appreciated. Thanks
I have used drill bits before, but never a spade blade. I have some basic question, such as do I need lubrication? I have 2 drills, one Hitachi corded and a Bosch 12V lithium. I guess both are able to do the job, will see which one feels better in my hand. I have 2 sets of spade blades. The Craftsman has a sharp tip, but no thread, so I need to push it. The Bosch blade has a conical tip with thread, so I guess it will self advance somewhat, but I still have to push I guess.
My questions really are if I should use some lubricant to keep the blades cool and finish the 40 holes without destroying the blade. also, it would be nice to get smooth edges with minimum chipouts.
I guess it would be best if I get a piece of wood to practice first before I start the real work. I can take my time, I don't have to finish this quickly, so I can take a break in between if the blades get hot of if I need to recharge in case I decide to use the Bosch drill.
Any other advice or tips is appreciated. Thanks