Re: [TowerTalk] [Bulk] Re: [Bulk] Re: Grounding/Bonding Lessons Learned

[Grant Saviers <grants2@pacbell.net>]

Recently, ATF exempted some "E-matches" from explosive regs.  They are 
available on ebay
http://www.ebay.com/itm/0-45mm-25pcs-lot-0-3m-Electric-Igniters-E-match-for-Fireworks-25-pk-/171723888783?pt=LH_DefaultDomain_0&hash=item27fb8a988f

I use them for igniting high power (APCP) rocket motors, avionics 
controlled parachute deployments, and backyard legal fireworks. They are 
fast but really hot so might work for Cadwelds, I haven't tried them.  
Augmented with some smokeless powder or other deflagrating compounds you 
can make they would likely work and also be safer since electrical 
ignition does not need to be up close and personal.  A 9v alkaline 
battery has enough energy for firing several E-matches.
Grant KZ1W

On 3/31/2015 8:27 AM, Al Kozakiewicz wrote:
> For future reference.....does smokeless powder work as well for this?
>
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Patrick 
> Greenlee
> Sent: Tuesday, March 31, 2015 9:18 AM
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] [Bulk] Re: Grounding/Bonding Lessons Learned
>
> Yes BUT... sulfur is optional, potassium nitrate isn't in black powder.
>
> Patrick   NJ5G
>
> On 3/30/2015 9:03 PM, Roger (K8RI) on TT wrote:
> >  From a corrosive standpoint, depending on the metal,  the potassium
> > nitrate is far more corrosive than sulfur.
> >
> >
> > 73
> >
> > Roger (K8RI)
> >
> >
> >
> > On 3/30/2015 4:43 PM, Grant Saviers wrote:
> > > A word of caution - take the can label literally, since BP sold in
> > > the USA is legal to possess ONLY for use in BP firearms.  Any other
> > > use requires an ATF Explosives User Permit, and you don't want to go
> > > there, with required regular inspections of your record keeping and a
> > > federally approved storage magazine.  I believe Pyrodex (no sulfur to
> > > corrode the firearm) is subject to the same regulations.
> > >
> > > see the ATF open letter
> > >
> > > https://www.atf.gov/sites/default/files/assets/Explosives/Industry/op
> > > en-letter-black-powder.pdf
> > >
> > >
> > > Grant KZ1W
> > >
> > > On 3/30/2015 7:52 AM, Keith Dutson wrote:
> > > > Can says black powder for black powder firearms., imported from
> > > > Brazil to Arlington, Texas.  I could find no reference to Pyrodex.
> > > > 4f is used in the flash pan, not the muzzle.  I am sure it is the
> > > > real thing based on instant ignition and burn time.
> > > >
> > > > 73, Keith NM5G
> > > >
> > > > -----Original Message-----
> > > > From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf
> > > > Of Patrick Greenlee
> > > > Sent: Monday, March 30, 2015 6:57 AM
> > > > To: towertalk@contesting.com
> > > > Subject: Re: [TowerTalk] Grounding/Bonding Lessons Learned
> > > >
> > > > Cool, clever substitute.  Pyrodex or the real thing?  I still have
> > > > part of a one pound can of real 4F.
> > > >
> > > > On 3/29/2015 8:37 PM, Keith Dutson wrote:
> > > >
> > > > Patrick   NJ5G
> > > > > Thanks for the great tip.  I will be doing 12 this summer, and just
> > > > > happen to have a pound of Elephant FFFFg.
> > > > >
> > > > > 73, Keith NM5G
> > > > >
> > > > > -----Original Message-----
> > > > > From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf
> > > > > Of RMorris
> > > > > Sent: Sunday, March 29, 2015 12:17 PM
> > > > > Cc: Towertalk Reflector
> > > > > Subject: Re: [TowerTalk] Grounding/Bonding Lessons Learned
> > > > >
> > > > >
> > > > > On Mar 29, 2015, at 10:09 AM, Mike Fahmie via TowerTalk wrote:
> > > > >
> > > > > > I had a similar problem igniting a Cadweld that had lost its
> > > > > > ignition
> > > > > powder.
> > > > >
> > > > > Needing to do 99, on a damp day, a little 2F black powder from the
> > > > > flintlock shooting kit got them to work every time.
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