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27-06-2013 #1
Guys I’m trying to punch some holes in a tobacco tin for my CMOY amps
, now I did buy Fiskars Fiskars 1/4 Inch Hand Punch, Circle but I bent it on the first use , waste of time really
! I think maybe the tobacco tins are maybe tougher than the US mint tins .. dunno
. Anyway any ideas of what I could build to punch the holes or buy? I am thinking of a bracket that slots over the tins front and ( I need three holes) maybe use pointed bolts I’d have to tap the bracket of course but it would be a lot more accurate ? Anyway maybe you have a simple solution?
Fiction is far more plausible when wrapped around a thread of truth
Nothing great was ever achieved without enthusiasm.
Ralph Waldo Emerson
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How about a paper hole punch as in this vid;- cMoyBB v2.02 Casing Assembly - YouTube
... Clive
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27-06-2013 #3
Fiction is far more plausible when wrapped around a thread of truth
Nothing great was ever achieved without enthusiasm.
Ralph Waldo Emerson
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27-06-2013 #4
Any reason why you would just not drill it? put a piece of wood underneath, line up point to drill, place wood on top then drill? clamp it if you can.
If the nagging gets really bad......Get a bigger shed:naughty:
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27-06-2013 #5
When I needed to punch some holes in some shim steel I just made a simple punch. It was also 1/4", so I ground a likely looking profile on the end of a piece of 1/4" HSS bar I had lying around, then drilled/reamed a hole the same size through two block of steel. Put the shim between and tap the bar with a hammer and you get a nice hole. If you need to punch a lot of holes this might be worth it, otherwise, as the previous reply says, just clamp it between two bits of wood and drill through it.
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27-06-2013 #6
I guess it all depends on the quantity of tins you want to put holes in. If you're doing a few, then a nicely constructed drilling jig would allow you to quickly clamp and drill all your holes within a minute or two.
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28-06-2013 #7
milehighclub
Last edited by m_c; 20-05-2014 at 10:59 PM.
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28-06-2013 #8
I am aiming to do quite alot , the drill I have tried it tends to tear the metal and because its PCB mounted equipment I want it quite precise so it looks good.. i have looked at a numatic set of rams , but i want something simple to start with.
Fiction is far more plausible when wrapped around a thread of truth
Nothing great was ever achieved without enthusiasm.
Ralph Waldo Emerson
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28-06-2013 #9
Have a look on the web for a Whitney hand punch, I have an old one that goes to 1/4", does 16swg steel ok but you should centre punch first to get a good location.
Just had a look on the web and they appear to be quite expensive! But they do work!!
peter
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28-06-2013 #10
To drill holes in thin sheet steel as others have said sandwich between to pieces of wood but main thing is do not use a normal jobbers drill but grind one up like a wood bit as a wing and spur.
If you have decent wood bits you could just use one of these but most i have come across aren't even hardened hence the grinding up of the wing and spur.
Worth keeping a few as they are also ideal on plastics and prevent splitting as they exit the hole.
John S.Last edited by John S; 28-06-2013 at 09:36 AM.
John S -
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