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How To Get Creases Out Of Punch cards??
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Nov 1, 2017 00:30:12   #
MKDesigner
 
I'd picked up a box with punch cards at an estate sale recently and several (12 or so) have severe creases / folds and I don't know how to get them flat again. Some have punch design from a mfg, some are hand punched. A couple are blank. The other 14 are just fine.

I didn't spot any tears or broken holes, but didn't want to try straightening out by just with my hands in case damage happened.

What's the best way to try to flatten them? Do they need to be soaked or something? Steamed between a couple pieces of thick cloths?

Help?

Marge
 
Nov 1, 2017 04:07:14   #
susanjoy
 
I have never done this but I would try a warm iron over a cotton cloth. Try a low setting to start with and gradually work up to a higher setting. Too hot and the cards will buckle. If you have a scrap of waste card, it might be an idea to put a crease in it and see if this works before trying out on a punched card.
Nov 1, 2017 04:22:01   #
MKDesigner
 
susanjoy wrote:
I have never done this but I would try a warm iron over a cotton cloth. Try a low setting to start with and gradually work up to a higher setting. Too hot and the cards will buckle. If you have a scrap of waste card, it might be an idea to put a crease in it and see if this works before trying out on a punched card.


Hi Susan,
Thanks for that suggestion. I'll give that a try and report back. I've got an old VERY worn out card I can crunch / crease up and run it over it with my marble rolling pin for a couple of days.
Thanks,
Marge
Nov 1, 2017 08:16:34   #
Tallie9
 
Place card on a firm surface....set cotton cloth on top....iron at low heat setting.....no steam....You can raise the heat setting a little higher if needed....
It will also depend on the type of punchcards you have......The original punchcards I have for the Singer SK360 appear to be vinyl and tolerate the above process very well....but the Deco punchcards for my Passap appear to be a thin plasticine over paper and didn't fair so well with the above process...
Nov 1, 2017 09:29:28   #
KateWood
 
If the applied heat doesn't work, you may need to re-punch enough rows so the sections can be clipped together & cut the crease out
Nov 1, 2017 13:14:48   #
dialknit (a regular here)
 
KateWood wrote:
If the applied heat doesn't work, you may need to re-punch enough rows so the sections can be clipped together & cut the crease out


 
Nov 2, 2017 06:03:59   #
der_fisherman (a regular here)
 
MKDesigner wrote:
I'd picked up a box with punch cards at an estate sale recently and several (12 or so) have severe creases / folds and I don't know how to get them flat again. Some have punch design from a mfg, some are hand punched. A couple are blank. The other 14 are just fine.

I didn't spot any tears or broken holes, but didn't want to try straightening out by just with my hands in case damage happened.

What's the best way to try to flatten them? Do they need to be soaked or something? Steamed between a couple pieces of thick cloths?

Help?

Marge
I'd picked up a box with punch cards at an estate ... (show quote)


Are these card or some sort of plastic, like Mylar?

You need to ask yourself how the folds got in there first, and do the opposite!

Over many years (but not with punchcards), I have simply put stuff on a flat place, with something else flat on top, maybe on a radiator or similar, then large weights. Even plastic containers filled with water will do. Then leave it for at least a week.....

I have even flattened warped CDs and DVDs this way....

If that does not work, try the cool ironing method someone else mentioned....or watch this video, whicht help you further:-

https://www.youtube.com/watch?v=0wnLr_zprLc

regards

Andy
Nov 2, 2017 07:04:10   #
KateWood
 
der_fisherman wrote:
Are these card or some sort of plastic, like Mylar?

You need to ask yourself how the folds got in there first, and do the opposite!

Over many years (but not with punchcards), I have simply put stuff on a flat place, with something else flat on top, maybe on a radiator or similar, then large weights. Even plastic containers filled with water will do. Then leave it for at least a week.....

I have even flattened warped CDs and DVDs this way....

If that does not work, try the cool ironing method someone else mentioned....or watch this video, whicht help you further:-

https://www.youtube.com/watch?v=0wnLr_zprLc


regards

Andy
Are these card or some sort of plastic, like Mylar... (show quote)



This works as well
Nov 2, 2017 08:32:58   #
myj697
 
I just did this on one of my punch cards. Low heat iron, it works.
Nov 2, 2017 09:44:35   #
Jo Lynn
 
der_fisherman wrote:
Are these card or some sort of plastic, like Mylar?

You need to ask yourself how the folds got in there first, and do the opposite!

Over many years (but not with punchcards), I have simply put stuff on a flat place, with something else flat on top, maybe on a radiator or similar, then large weights. Even plastic containers filled with water will do. Then leave it for at least a week.....

I have even flattened warped CDs and DVDs this way....

If that does not work, try the cool ironing method someone else mentioned....or watch this video, whicht help you further:-

https://www.youtube.com/watch?v=0wnLr_zprLc

regards

Andy
Are these card or some sort of plastic, like Mylar... (show quote)



This method worked really well on a rubber wheel from a really old KM. The wheel was badly warped. I left it under weights for a couple of weeks and it came out very nice. I would try this before using the iron.
Nov 2, 2017 11:17:58   #
randiejg
 
I had some punch cards that had been wrapped very tightly over a small diameter cardboard core and wrapped with a rubber band, and just couldn't be straightened out. I laid a folded towel on the counter top, laid a heating pad on top of the towel, laid out the cards on the pad, a hand towel over the cards, then put a pile of books on top and just left them all day on a medium setting. By evening, they were as flat as can be. Not sure how effective it would be with creases, but may be worth a try.
 
Nov 2, 2017 12:57:55   #
knityknot (a regular here)
 
I'd try some brown paper over the punch card, and a warm iron first and keep turning the iron up just a little till the crease comes out.
Hope you work it out good luck.
Nov 2, 2017 13:19:50   #
malfrench
 
Thanks for asking that question. I just found one of my favorites with a fold. I don't know how it got there.
Nov 2, 2017 19:40:00   #
MKDesigner
 
All of these suggestions are super!! Thanks folks. So many possible solutions to my mess. Greatly appreciated. Will take pics and let you all know. Some are Toyota, some Brother and I think a couple may be Studio/Singer.
Marge
 
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