|
Register | Album Gallery | Thread Gallery | FAQ | Community | Calendar | Become a Paid Member | Today's Posts | Search |
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Drilling, already painted panels
What is the safest way to drill holes in already painted metal panels?
I would like to install hood pins on my Chevelle and I am afraid of damaging the surrounding paint. Any help on the best way to do this would be appreciated, i.e. drill bit, step drill, hole saw. or anything else Thanks |
#2
|
|||
|
|||
Re: Drilling, already painted panels
Use a brand new bit so it will be less likely to walk. Also, being new and very sharp, it will cut quickly so as not to build up excessive heat.
Finally, slip a small piece of rubber hose (like a fuel line) over the bit, leaving part of the bit exposed. That way, when you "break through", if you still have pressure on it, the chuck doesn't hit the paint. I like the bullet point bits. Black and Decker works just fine on sheet metal. Good luck.
__________________
Don't believe everything you read on the internet ... Ben Franklin |
#3
|
|||
|
|||
Re: Drilling, already painted panels
Maybe want to use a piece of masking tape over the area you want to drill, and then mark your hole. Also a smaller pilot bit first will be easier to line up the bigger, final hole. Lay some rags or towels under the hood to catch the filings and maybe a piece of wood to support the hood while you are drilling while you have it slightly open. You will be able to press on a firmer surface to drill straighter and your bit will end up in the wood instead of any other part of your car.
|
#4
|
|||
|
|||
Re: Drilling, already painted panels
Any competent machinist, and probably lots of others as well can grind you a regular drill bit to drill sheet metal. Once you've seen it done, you can do it yourself. It's not really that hard. You can also buy a stepped drill bit that will do a variety of sizes in sheet metal. Handy tool to have.
__________________
Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now. |
#5
|
|||
|
|||
Re: Drilling, already painted panels
The stepped bits are nice cause the hole looks more like it was punched .
__________________
"Knowledge is good" Emil Fabor 67 L/78 Camaro SS/RS H-H,1W,2LGSR,3SL,4K,5BY. (Sold) 70 L/78 Nova M-21,Black Cherry,Sandalwood Int. 09 Pontiac G8 GT Premium,Sport,Roof. Liquid Red. |
#6
|
||||
|
||||
Re: Drilling, already painted panels
My choice #1...Blair hole saw, drill a pilot hole the size of the arbor....DO NOT rely on a spring loaded arbor pin
#2 Use a step drill as already mentioned, again drill a pilot hole, about 1/8" first. Another good choice would be a greenlee hole punch if you could borrow one, and if you have back side clearance. worst choice in sheetmetal is a twist drill And tape the area, as mentioned...and don't be scared just Git er done Mike |
#7
|
|||
|
|||
Re: Drilling, already painted panels
I got one of those Greenlee hole punches! Wish I had a nickel for every whole I punched in those electrical panels! I could probably buy a BB!
|
#8
|
|||
|
|||
Re: Drilling, already painted panels
Thanks guys, just looked at Greenlee Hole Punches online those things look pretty sweet. I think I may order a few.
Not that it’s a big deal the Chevelle is just my summer driver. But would someone know the correct size hole diameter that is cut in a cowl induction hood for the hood pin to go though. Thanks again Todd |
#9
|
|||
|
|||
Re: Drilling, already painted panels
Fit the bit to size of the hood pin plate. When I drilled the holes in the Gibb camaro I put the old plates on and then drilled the holes.
__________________
Jake is my grandson!! |
#10
|
||||
|
||||
Re: Drilling, already painted panels
The hole cut into the hood is 1"
__________________
Rick Nelson Musclecar Restoration and Design, Inc www.musclecarrestorationanddesign.com https://www.youtube.com/watch?v=62r-6vgk2_8 specializing in (only real) LS6 Chevelle restorations |
|
|