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Author: Subject: Blasting Cap Crimper.
specialactivitieSK
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[*] posted on 19-12-2021 at 00:02
Blasting Cap Crimper.


Christmas pressent from me to me.

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Brightthermite
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[*] posted on 19-12-2021 at 09:47


Well lets see the results!!
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ManyInterests
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[*] posted on 19-12-2021 at 10:55


That's cool. I can't use it because I am not using metal detonator cases. I'm using plastic ball-point pens. So I what I do is I fill in the gap before the electric match with cotton saturated with superglue (it makes it rock hard) and then top it all off with copious quantities of hot glue... since I cannot get my epoxy to harden for some reason.
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Fulmen
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[*] posted on 19-12-2021 at 12:05


That looks like a quality tool, very nice design. I might have to make something like that one of these days...



We're not banging rocks together here. We know how to put a man back together.
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Gargamel
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[*] posted on 20-12-2021 at 00:56


Very cool :cool:

Whats the maximum permissible wall thickness?
Some of these crimping pliers can only handle really thin tubes, like 0,25mm or so.

System Berta for example needs a different approach, thats for sure;)


Did anybody here ever tried a Knipex type 975504 or similar?
These could only handle thin walled tubes too, I wonder if they could do 0,5mm aluminium... Also the diameters one can handle are pretty narrow.
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Vomaturge
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[*] posted on 20-12-2021 at 05:27


Quote: Originally posted by ManyInterests  
...with cotton saturated with superglue (it makes it rock hard) and then top it all off with copious quantities of hot glue... since I cannot get my epoxy to harden for some reason.


hate to redirect the conversation as I've never made caps, but I have made "epoxy substitutes" by mixing superglue and cotton, or superglue and sodium bicarbonate, to fill in a gap. It's worth mentioning that it gets hot while curing, sometimes even smokes, and there's videos of it on YouTube, supposedly auto igniting. Not sure how much of a risk there is in your setup, probably negligible but it would be nice to know how hot it actually gets.




I now have a YouTube channel. So far just electronics and basic High Voltage experimentation, but I'll hopefully have some chemistry videos soon.
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specialactivitieSK
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[*] posted on 25-12-2021 at 02:30


What are you thinking about this for blasting Caps. transportation?

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specialactivitieSK
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[*] posted on 25-12-2021 at 03:27


Crimping test

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ManyInterests
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[*] posted on 25-12-2021 at 07:54


Quote: Originally posted by Vomaturge  
Quote: Originally posted by ManyInterests  
...with cotton saturated with superglue (it makes it rock hard) and then top it all off with copious quantities of hot glue... since I cannot get my epoxy to harden for some reason.


hate to redirect the conversation as I've never made caps, but I have made "epoxy substitutes" by mixing superglue and cotton, or superglue and sodium bicarbonate, to fill in a gap. It's worth mentioning that it gets hot while curing, sometimes even smokes, and there's videos of it on YouTube, supposedly auto igniting. Not sure how much of a risk there is in your setup, probably negligible but it would be nice to know how hot it actually gets.


Ignition is not a thing with superglue and cotton, but it is an exothermic reaction. How hot it gets, however, is dependent on the brand of superglue. I sealed a test cap (with a chlorate sugar filler) and used a different brand of superglue than what I normally use. It got much, much hotter than before. Thankfully it was nowhere near the mixture (I don't think it got nearly hot enough to ignite though) and it solidified.

I did watch TKOR's (The King of Random) video on baking powder and superglue and I don't think it gets very hot at all. Either way the reason why I am using these instead of 5-minute epoxy is because no matter what I do, I can never get the epoxy to harden. It is weird, but that issue, and the foul smell of epoxy made me want to find something else. Hot glue, once it cools and cures, is pretty solid. Making a glue plug first then topping it off with more glue should be an adequate seal.

The other thing is cutting down the pen body to just the right length. because it is excessively long for the 0.75/1.5 grams of energetics you want to put in there (depending on how powerful a detonator you want to make).
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specialactivitieSK
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[*] posted on 4-1-2022 at 08:41


I have NRK-003 BRK-7 Blasting Cap Crimper Pliers for sale as auction. Contact me for link and shipping cost!!!


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[Edited on 4-1-2022 by specialactivitieSK]
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Herr Haber
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[*] posted on 6-1-2022 at 07:28


Wooohoo... delivery more than actual item :-/



The spirit of adventure was upon me. Having nitric acid and copper, I had only to learn what the words 'act upon' meant. - Ira Remsen
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specialactivitieSK
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[*] posted on 7-1-2022 at 03:46


Contact me for delivery cost shiping!!!
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specialactivitieSK
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[*] posted on 18-1-2022 at 00:03


One piece of pliers has been sold and one piece is still for sale. Price 100 €. Shipping costs from Slovenska pošta.

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specialactivitieSK
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[*] posted on 3-2-2022 at 06:28


No more for sale
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