I used the harger uni-shots on my tower system (not erico one-shots). I
have 27 cad welded points and all went without flaw. All were ignited with
a MAPP torch. I REALLY like how the igniting powder with the harger is
seperated from the thermite. The thermite will not ignite without the
starting powder, and you definitely need to have some on top of the mold
for it to go.
Good luck!
W0MLD
On Tue, Nov 1, 2016 at 9:27 AM, N3AE <n3ae@comcast.net> wrote:
> Erico's Cadwelds have the coarse grain thermite and the fine grain starter
> powder in the same little container, with the starter powder in the bottom
> so it ends up on top when you pour it in. Problem is that the two can mix
> in shipping making them hard to light off. A Cadweld box is marked "this
> end up" for a reason. One solution is to use the electric ignition product
> (available RF Connections and rent/buy the igniter box) or use another
> brand, Harger, which you can get from KF7P. The Harger uni-shots have the
> two powders separated so they can't mix in shipment. Having used both, I
> prefer the Harger. I use a sparkler on a short stick (and gloves) to light
> them off.
>
> Shawn
> N3AE
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