Great timing, I'm getting ready to drill my door and needed a pic. thanks! Do you have any tips on using step drills? I was planning on using mine, but have never used them before. Since my door is already painted, I figured I'd lay some tape over the panel first, drill a pilot hole then go with the step bit.
Which holes are you drilling,the holes for the mirror (exterior), or the hole for the mirror adjuster (interior).
Either way it is pretty much the same method.
For mirrors, measure where they go. Measure again,and again. You get the picture,you only get to drill once. Make a mark with a pencil etc. Then I use a center punch. Not the punch you use with a hammer, but a punch that automatically punches a mark when you press down on it (spring loaded). If you dont have one of these punches. get one,there cheap and really handy.
Now use a tiny drill bit,and make your pilot holes. After your pilot holes use "blue" masking tape over the area you are drilling. This will stop the paint from chipping when you go bigger.
Figure out on your step drill how far you need to go on it. Best way to do this is use a bit on the other side to measure off of. Go a size or two smaller. You can always go bigger if you need to.
Once you determined the size on the step bit, tape around the bit where you need to stop. This will help give you a better visual.
SLOWLY drill to the tape mark on your bit, one step at a time. After your done drilling to your mark, test fit your screws.They will tell you if your good or you need to go a touch bigger. Peel the tape off SLOWLY, so you dont take any paint off with it. Done !
PS: Use the blue tape,doesnt stick as much. Non Tacky.
If you are drilling the inside adjuster,same steps.