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5mm square hole

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Peter Simpson 312/05/2023 08:08:43
122 forum posts
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Pgk I thought of making them is two halves, but I will have to produce the square hole through 1/4" of steel and then make twenty of them.

JasonB12/05/2023 09:20:03
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25215 forum posts
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I suppose it comes down to what you are getting in return for making the items. Cost of a Broach divided by 20 could be added to the sale price of each item and would be offset to some extent by the cost of time you would have to charge to make the holes by other means.

Edited By JasonB on 12/05/2023 09:20:31

John Doe 212/05/2023 10:07:34
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Surely a 5mm diameter hole in 1/4" plate could have its corners opened out with a square file in not too much time. Although I agree; 80 corners would be a bit of a b*ll ache to do !

Alternatively, think laterally: I would be inclined to find a company to laser cut a series of 5mm square holes in a sheet of metal, spaced appropriately so you can cut them out and fabricate the rest of the device around each hole.

Or maybe there is a tool or widgit available with a 5mm sq hole that you could buy in then attach to the devices you are making?

For example, a quick look around my tools found this Knipex cabinet key tool, which has a 5mm square hole in the centre there. But a laser cut sheet would be cheaper and easier probably.

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Edited By John Doe 2 on 12/05/2023 10:14:27

Peter Simpson 313/05/2023 14:41:16
122 forum posts
2 photos

In the end I did as Rod suggested. I milled a 5mm slot from an external perimeter, then silver soldered a piece of mild steel giving me a 5mm hole. Always a good source of suggestions on here. Thanks

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