Personally, I would have used a cone shaped step bit. But this is mainly a personal preference.


Also, sand is NOT very kind to drill bits or just about any other cutting edge. I'd recommend placing wood under the drilling location rather than pushing the bit into the earth.

I have never seen bits like that. I was thinking of buying one more trough but the thought of drilling holes again has put that on hold. Yes wood would be much better to drill into, I agree.

I thought this drilling project would be a 20 to 30 minute job but took most of the afternoon. I'm use to drilling holes in plastic containers.

A fun project. Thanks for the tips on improving the drilling project.

The small starting tips on the step bits make drilling holes into metal a breeze, and then you just push it through till you get to the size you need. The trouble you are having is with that particular bits flat faced tip. It's taking a lot more 'push' to get the cutting edge of the bit to 'bite' the metal.

Yes, that is exactly right.

Rob is exactly right. Step drills are the perfect tool to use to drill holes in sheet metal. I'll bet the big drill grabbed and spun the drill motor as it broke through. Step drills don't do that. Much safer for your wrists.

And if there are ragged edges on the back side of the hole, just run the step drill in from that side and it will take them off easily.

You can get a cheap set at Harbor Freight, usually for about 14 bucks or just an 1/8" to 3/4" bit for $6.

If I do any more of these troughs, I'll use these step drill heads, thanks Julia for creating this Tip/Idea and thanks Bob for the step drill idea!!

And while you are at Harbor Freight or the hardware store buying the step bit, pick up a little bottle of cutting fluid for steel. It will make the drilling easier and make the drill bit last much longer before it needs to be sharpened.

Thank you so much for these tips. I bought a nice trough that I am going to try to grow lavender and penstemon in. Those plants rot in my ground over the winter. I will buy a step bit before I try drilling.