Sigelei #19 Tips, tricks, and DON'Ts

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Thraizer

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I have seen in this thread both M6 x .7 and 1/4-28. With the measurements I got, I would think it's closer to the 6mm odd ball thread. If you're rebuilding it like I did, I'd recommend going with 1/4-28.
I got got 1/4-28 brass bolt and tried it, it only threads about 1/2 turn before binding.

Did you re-tap the hole in your button for 1/4-28? I wouldn't think that would work out very well with the existing threads there.
 

Zak Rabbit

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I got got 1/4-28 brass bolt and tried it, it only threads about 1/2 turn before binding.

Did you re-tap the hole in your button for 1/4-28? I wouldn't think that would work out very well with the existing threads there.

Yep, I retapped it, then made my own firing pin out of steel because that's what I had. Works just fine but eventually, I want to make it out of brass or copper.

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BlackChad

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Update: FINALLY! Got my old boss, a vise, some clamps, 2 grinders, 2 boils, 2 freezes, a 12+ hour acetone bath, back to the grinder/vise/screwdriver and bam. Im so excited

Now my delrins got a few notches from having to grind way in... im unsure whether I should sand it all flat or rebuild with glue. Also my brass cup has a couple tiny notches in the sides... hopefully that wont matter. Might sand those so it looks not crummy. Now to start stuffing copper.

Thanks for the help guys, I reqlly appreciate it. This is my second mechanical and my first time tearing one apart so ill be around

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Update: FINALLY! Got my old boss, a vise, some clamps, 2 grinders, 2 boils, 2 freezes, a 12+ hour acetone bath, back to the grinder/vise/screwdriver and bam. Im so excited

Now my delrins got a few notches from having to grind way in... im unsure whether I should sand it all flat or rebuild with glue. Also my brass cup has a couple tiny notches in the sides... hopefully that wont matter. Might sand those so it looks not crummy. Now to start stuffing copper.

Thanks for the help guys, I reqlly appreciate it. This is my second mechanical and my first time tearing one apart so ill be around

Sent from my Note 2 on Tapatalk 4

You will feel the notches on the side of the brass cup when you press it, it will snag on the delrin a bit.

It happened to me when I overtorqued the vice when I using my drill press.

I had to step-sand the brass to make the button-press feel smooth again.
 

whit77

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BlackChad

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Quick question. Will the gold spring from a vamo or #20 in thr button housing upside down work to stop the spark throwing?

It makes perfect contact all the way around and if I cut the nubbin off itll wrap nicely on the button.

I have copper wire, but im trying to avoid that

Sent from my Note 2 on Tapatalk 4
 

NamVet68

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Quick question. Will the gold spring from a vamo or #20 in thr button housing upside down work to stop the spark throwing?

It makes perfect contact all the way around and if I cut the nubbin off itll wrap nicely on the button.

I have copper wire, but im trying to avoid that

Sent from my Note 2 on Tapatalk 4

Yup, a Vammo or #20 spring will work fine, and so will a hot spring from a Silver Bullet, but they all need to be tweaked a bit to make them fit.

I don't know why Sigelei didn't use a "Hot Spring" in the first place - I figured they'd have learned from the problems on some of their other mechanicals... a more-conductive spring makes all the difference in the world.
 
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corpus

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Wouldn't a true "hot spring" (one that's built to collapse when a certain amount of current is passed through it) be detrimental for use within the switch? I mean, if the spring did collapse wouldn't it have the opposite effect - continuously firing rather than breaking contact with the battery.

Well yes..if it collapses and you sit the mod on the button..there will be nothing pushing it back from making contact with the battery
 

zipflint

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So if I bought JUST the brass bottom button (it says it has the upgraded solid brass firing pin)
that would solve the intermittent contact problems I'm having?
Sigelei 19 brass bottom button

FWIW, just fliping the top and bottom rings (so that the vent holes are on the bottom) weirdly has helped
a LOT with the occasional non-fire I was getting. So I might not "need" to do anything at all.
Slapped an X10 BCC tank on mine a few minutes ago and it's workin' like a champ.
 
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