Enlarging the mounting holes on Acorn board
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Enlarging the mounting holes on Acorn board
Has anyone enlarged the mounting holes on the Acorn board and relay board? I would like to drill out the holes to 5mm to facilitate mounting them to brackets for my DIN rails. Of course I could turn adapters out of brass but it would be a lot quicker to drill out the holes.
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Re: Enlarging the mounting holes on Acorn board
They are 2 layer boards, so there is no danger of hitting anything inside you can't see. Of course any warranty, swap out option, etc. is unavailable if you take a drill to the product.
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Re: Enlarging the mounting holes on Acorn board
Yes, it' a pity that the holes are not sized with an eye on metric fixings, as used by the entire world outside of the US. They seem to be around 4mm diameter or possibly slightly less, so an M4 won't quite fit, yet an M3 is a loose rattle fit and doesn't quite feel big enough to be fit for purpose.
I'd suggest the holes be opened up in the layout to somewhere around 4.5-4.8mm diameter range. Drilling out the holes removes the through hole plating which may compromise the grounding, although the fixing screw might provide some electrical continuity.
I'd suggest the holes be opened up in the layout to somewhere around 4.5-4.8mm diameter range. Drilling out the holes removes the through hole plating which may compromise the grounding, although the fixing screw might provide some electrical continuity.
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Re: Enlarging the mounting holes on Acorn board
It's simple, they are a US made product that chooses to use US made fastener sizes
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Re: Enlarging the mounting holes on Acorn board
If you have a 3D printer, here are links to DIN rail mounts i made that dont require modification to the board
uses M3 bolts
https://www.thingiverse.com/thing:5232039
and fore the relay board
https://www.thingiverse.com/thing:5232089
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Re: Enlarging the mounting holes on Acorn board
Yes and with a tiny change, it would be a truly global product! Let's call this a feature request perhaps.Gary Campbell wrote: ↑Wed May 18, 2022 12:36 pm It's simple, they are a US made product that chooses to use US made fastener sizes
Referring back to the OP, DIN rails are of course a German invention
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Re: Enlarging the mounting holes on Acorn board
What's wrong with using an M3.5-0.6 screw?
Cheers,
Tom
Confidence is the feeling you have before you fully understand the situation.
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Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
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Re: Enlarging the mounting holes on Acorn board
I would not drill, M3 or M3.5 works well if you are not living in the imperial imperium
IMHO mounting with wobbly bracketts on DIN rail is not the best way to mount a board. I prefer long screws and spacers made from brass tubing for a more rigid mounting. Its easy then to screw the wiring without supporting the Board with a third hand, I only have two hands
Uwe
IMHO mounting with wobbly bracketts on DIN rail is not the best way to mount a board. I prefer long screws and spacers made from brass tubing for a more rigid mounting. Its easy then to screw the wiring without supporting the Board with a third hand, I only have two hands
Uwe
Last edited by suntravel on Thu May 19, 2022 9:06 am, edited 1 time in total.
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Re: Enlarging the mounting holes on Acorn board
Almost every fastener I have seen in US Customary sizes was made somewhere else and exported. Also, are you 100% certain the Acorn boards are actually manufactured in the US?Gary Campbell wrote: ↑Wed May 18, 2022 12:36 pm It's simple, they are a US made product that chooses to use US made fastener sizes
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