Paper punch for shrink wrap?

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For like an "air hole" ?
I think you would need a straight punch (not the pinch kind) as it will get bigger if you punch, wrap and the shrink.
I assume you know that :)

I would just hole the heat gun a bit close to make a small hole once it is shrinked enough.
 
I agree with Dixie. A 3/4" hole will become ginormous when the wrap is shrunk down. Also punching a hole in shrink wrap is tough -- the plastic kind of wants to shred rather than cut cleanly. The hole will also not stay round when shrunk down because the plastic (at least the shrink bags I use) wants to shrink more in one direction than the other.

Instead, I cut a slit 1/8" to 1/4" long with a box knife or razor blade. That tiny slit will give me an oblong "sniffy hole" that's 1/2" to 3/4" long when the wrap is shrunk down. Here's a tutorial about how I use shrink wrap to package soap: https://classicbells.com/soap/pkgTut.html
 
WSP Shrink Bands 102 X102 are open at both ends for sniffing and fit a standard size bar of soap. I used a hair dryer on LOW to shrink the bands to fit the bar. Quick and easy after a little practice. ;)

ETA:
Video How to Shrink Wrap Bands (go forward to 2:45 on the Video to see packaging)
http://www.wholesalesuppliesplus.com/handmade101/watch-to-learn-videos/Vanilla-Moisturizing-Lotion-Bars-Recipe.aspx

Tips on Shrink Wrapping CP and HP bars:
http://www.wholesalesuppliesplus.com/handmade101/learn-to-make-articles/simple-secrets-shrink-wrapping-products.aspx
 
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Using a shrink wrapper almost daily at work, if you use your heat gun in one spot just a little too long a little too hot, you'll get a hole. You can use that technique strategically. I don't normally want holes at work (we deal with paper) and it means I have to rewrap my order but, when it comes to soap...
 
Using a shrink wrapper almost daily at work, if you use your heat gun in one spot just a little too long a little too hot, you'll get a hole. You can use that technique strategically. I don't normally want holes at work (we deal with paper) and it means I have to rewrap my order but, when it comes to soap...

I started with the tiny slit method to make sniffy holes, but with practice I realized I could "blow" a hole with the heat gun, like you mention. This works just as well and is much faster. It's a little more tricky to do, however, so beginners to shrink wrapping might want to use the tiny slit method at first then graduate to the "blowing" method with a little more experience.
 
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