Now I'll get to the tools I used. When I started this project I had no idea how I was gonna do it, I just started doing it and figured the best tools out on the way.

1. Drill bits. Yes, drilling glass and steel is harder than drilling wood and plastic. If you choose a plastic housing and plastic bottle instead of the second jar you will do fine without these.

The left one is a really good steel drill bit. Your drill bit may say metal drill bit, bit don't trust it. Those "metal" drill bits drill tend to wrikle and tear up the hole you make. Look for a drill bit with a tip like the one on this pic. It will drill easily through steel and make a very clean hole.

The drill bit on the right side is a glass drill bit. It's good for making bongs too.

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2. A good tool.

I used this cuz this is what I found at home. I don't think you absolutely need a tool like this cuz the bits can be installed onto a normall drill too.

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These disks were priceless. They cut brass, steel, and glass too. They were amazing.

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I used this thing for fine-tuning my cuts into the steel. I don't know what it's called.

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3. A good clamp. Very important, you don't want to drill into your hand if something slips.

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4. Safety glasses. Use them whenever you are drilling glass or metal, better safe than sorry.