Looking for recommendations for a new step drill bit. Prefer metric, starting at 3mm
The ones I've been using keep their point, but its the flutes that are dulling. I haven't had an issue with these and the marks I make with my center punchWhichever one you end up getting try and find one with a good bevel on the tip. The Dewalt (not metric) one I currently use, though strong and long lasting, has a weak initial bevel. That's my only complaint with it. This makes it harder to set it into the center punched mark I make. It still works great, it's just harder to align.
Their #1 Unibit looks perfect for pedals, may pick one up todayI have and use the Irwin ones. Yes they are more expensive but they last long. Even with the non brand name ones I make sure to drill a pilot hole. And if the enclosure is not finished I will use some sort of lubricant. That and go slow, otherwise i tend to gild the aluminum to the bit.
Using the Harbor Freight bit right now. It's gone through six enclosures no problem. I will be ordering one of those Irwin Unibits, though. Also started drilling a 3/32" pilot hole today, and it certainly makes bringing the holes up to size a lot easier as far as alignment goes, especially with my shit nerves and hand spasmsI get my step drill bits at Harbor Freight and drill a pilot hole the size of the smallest step. I use regular HF drill bits for the in-between sizes. I used a drill press, drill vise, wood shims to protect the finish and I take it slow.
Yep, #1 Unibit is my favorite. It's certainly a little more spendy but it's lasted a very long time for me and always given great results. I used to use the cheap Harbor Freight ones a lot and they're not bad, but always dulled up a lot quicker and just didn't leave as nice of holes IMO. For me it's paid for itself.Their #1 Unibit looks perfect for pedals, may pick one up today