12 Gauge Shotgun Perimeter Alarm - Build Your Own 

Well that worked out. If I lived as close as you are to Seattle I would be using double OO. Be safe, fun project.

RU-vid BUILD OF THE YEAR !!! Congratulations and welcome back

That’s a bear of a project. Nice to see you getting a real bang out of your work. Thanks, John

Thanks! Enjoyed this. Good to you see you posting again!

Gives me a great idea for a mole problem in my front yard... Cheers!!

Great and fun project Yuchol!!!

Welcome back. I missed your videos.

Best vid I've seen thus far.

Great to see you back with another video Yuchol. Always enjoyable. Gary

It's good to see that you are doing well.

Exhalent video especially enjoyed your verbal instructions. I wish I had a machining instructor in my area to tech me. Keep up the good work.

Thanks for the quality video. Really enjoyed it. 7075 and 6061, you must be in the aviation industry. Keep them coming!

I just use primers, I think the powder needs to be in a breech for it to build up enough pressure to explode, in this case it seems to act more as a suppressor, I'd be interested to see a comparison between a full (blank) shell and an empty one with just the primer detonating. Good build, looks very pro!

Well worth the wait!!!

Good video Yuchol...nice to see you back doing machining on YT

Gr8 vid Thank you! 😇🙏🤓

So glad to see you back. I really enjoy your videos. Here in NC in the country it’s normal to hear gun shots now and then and it would be great to keep the bears away. Thanks

Very Cool!

Hey there Yuchol, very nice to see you again. Hope everything is good at home with you and yours. Nice project. Thanks for sharing.

Gday, great to see you back mate, I think I need one here, every now and then there’s a critter looking to knock stuff off around the house, awesome build, cheers Matty

Very enjoyable, TOT is jealous of you inset photos/clips.

Well done Yuchol. That should last about a hundred years. I even liked the music in the video which is very unusual for me. I made a similar item one time but for using loaded ammo. It was actually harmless and I showed that in my video "Certain death or not". youtube hated it and demonetized it until people had already seen it.

Came out well, the zip tie grooves make it look kind of tactical! I know having something like that in the mountains where I'm from would be handy for camping as the black bears are into everything if they can.

Nice work! Good to see you back in the shop. Workshop is looking great. And a nice heat treating oven! Next step is making a silencer for it ;-)

I want a tap holder like you used. Very nice build. Spawns do many ideas.

Cool project I've been really enjoying your content

This video is a banger 😁 Nice work

Neat idea, I’ve never heard of such

The general theme of the project and the music at 4m45s reminds me of FreedomToons :) Cool project!

It's great for Amazon packages!

Awesome!!!

If you get a 12 gauge chamber reducer you can fire live pistol ammo out of it. The reducer fits just like a shell does but is chambered for a pistol. You can build a frame to mount it to. Works as a great back up shtf device.

Hi Yuchol, Cool video… an enjoyable video… Take care Paul,,

Welcome back, I see you are facing a week of rain. Lots of time to do indoor projects.

I thought California and Washington outlawed using the words firearm or shotgun except politicians? It's still a great informational and entertaining video. Great to have you posting again. Keep it up and take care!

We used to make them with pipe , about 2 ft long with nipples and a cap ! My buddy used marbles aimed at a steel plate and it sounded like a bell ! Lol

I was thinking, you could probably make some that use .22 blanks instead of shot shell blanks. .22 blanks are easier to come by, they sell them at most hardware stores and they come in different power levels. Since all you're looking for is a loud pop the .22 blanks will fit the bill and do it possibly cheaper.

Could you make the groove for the shotgun shell rim with a slitting saw?

What kind of compression spring did you use? The size

looks like you need a shroud around it so you don't burn down the forrest.

Cool! Next up on Woodscreek Workshop, How to get rid of TWEAKERS! 🤣

Curious to know when you tested if that hairpin clip offered to much friction? Might be that a straight pin would be more effective to that leg brush that will activate it without giving the intruder time to feel the wire and step over it? You probably did it off camera but I would have chamfered the striking surface of the firing pin to keep it from acting as a punch and penetrating rather than dimpling the primer which results in gas blowback (probably not so much with no projectile going out but still not a good thing)

Hi Yuchol, great to see you back in the workshop. Interesting build. Especially like the boring head application for the t slot geometry. Well done. Cheers, Jon

I was just wondering what Yuchol had been up to. Figured maybe working on the new machines, maybe some projects inside the house. Not what I was expecting XD

...or if you are a pyromaniac. Oh, you are going to get me in trouble. Happy Ney year, Yuchol. I hope the new year find you and your family well.

Good to see you Yuchol. Thanks for sharing this interesting stuff. Did you ever just try a primer.....likely that isn't loud enough. What do you the expert think.

I got commercially build ones in my store but you should only use them with bear bangers.

After many years of reloading shells. I have found that just the primer in a shell is just as loud if not louder than a blank or loaded shell. At least in 20 gauge. Great videos. Thanks

I think the firing pin may fail , if you had a radius at the base of the pin it would increase strength many times. Not picking just what I see could be better . most firing pins are tapered to help slow breakage .

Don't you own an air compressor? Just curious using that air in a can would be expensive. It is here in Australia anyways. Love your work.

You been watchin too much Taufladermouse Mr Kim!

Explosif project.

Ouch "failure to remove object from the foil wrap during hardening process" with you too now. First Tom and now you :D Somebody should figure out a or show a good procedure on how to do this.

Yuchol, it may be time to switch to decaf brother…😜

Or add a washer made of steel and cut the lock clip leg off.

Can I buy some from u?

What would you charge me to make one for me as I don't have the resources?

I love it but unfortunately it's not rain proof. It soon corrodes and binds up. Even the primer gets wet and soon stops working.

good for grizzlys in Alaska

These ARE legal in all states .

你好先生，请问能给我计划吗，非常感谢你❤

With this video it made me think I was well before this time making zip guns as a kid. Mostly .22s but a shotgun shell would have been more fun.

this is your boom stick. extra credit if you get the reference...

You only need 200k worth of milling equipment to build one of these

Hell yah ' I know some thief's that are going to shit themselves. Great info.

1 game, 3 tries, $150. Kinda expensive toy. Anw dont let your son see it.

You would think a guy who has access to thousands and thousands of dollars of high-end equipment would just buy a trip alarm at Dollar Tree; they go for $1.50. And that camper...omg!

Like everybody has a Mill and lathe just laying around the garage😂 thumbs down it's not d i y for the normal guy

...so, for saving $40-50 we need a $20.000 lathe...

How to make a $20 trip alarm for $200

Title should have been:"How To Make Someone Fill Their Shorts!"💩💩💩💩😆😆😆😆

Be cautious with that! Hawaii and now Joe Biden are cracking down on our 2A :(

14.00 a piece on amazon