Using a hole saw to cut holes through metal can be difficult and dangerous if you do not know how to use the drill s safety features.
Drilling holes in thin sheet metal.
This video shows how to.
Step drill bits can drill holes of several sizes in one operation.
Using step drill bit.
For holes up to 19mmø i would suggest starting with a piece approximately 100mm 4.
To making holes in sheet metal old hinist trick drill a big hole in sheet tool nibbler thin steel hole saw to making holes in sheet metal b f 11pcs hole saw cutting set kit 19 to making holes in sheet metal how work with12 for drilling holes in metal the family handymanto making holes.
This is better than using twist drills.
When drilling thin sheet metal clamp the metal over a piece of sacrificial plywood or other flat sheet good like mdf or particleboard to help prevent the bit from tearing up the hole.
But this drill has some drawbacks.
Drilling holes in thin sheetmetal have you ever tried to drill holes in thin sheet metal using standard drills and ending up with a ragged triangular shaped hole not anywhere near the diameter you wanted and perhaps requiring a trip the medicine cabinet for a band aid.
Sooner or later every homebrewer needs to drill holes in sheet metal.
For the cleanest hole clamp a second piece on top of the metal making a sacrificial sandwich.
You start off by drilling a small diameter pilot hole and then drill gradually larger holes until you get.
You can easily create large holes in thin sheets by using this drill.
Compare the two holes above in a piece of 050 thk.
The classical situation is drilling holes to mount switches connectors and potentiometers on the front panel of some instrument.
To drill a round hole in thin sheet metal take a piece of cloth for example an corner of an old tea towel cut into squares an old flannel or anything you don t mind cutting into squares and throwing in the bin once you have your nice round hole.
For clean precise holes in thin sheet metal make a wood sandwich.
As the tip of the drill begins to come through the bottom of the hole there is a tendency for the edge of the drill to snag the metal and spin the piece being drilled sometimes with considerable force which can cut you or even break bones.
Drilling a hole in sheet metal with a twist drill is a rather straightforward operation.
The problem is that the diameter of the hole is much larger than the thickness of the sheet and regular twisted drill bits do not work well.
Always firmly clamp the piece you are drilling to a substantial work surface.
Some step drill bits need pilot holes.
