Siege weapon to defend the shop

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Project by ic3ss posted 09-04-2016 04:00 AM 2336 views 7 times favorited 8 comments Add to Favorites Watch

I’ve wanted to build one of these for the longest time. I had vacation this week so mark that one off the list!

Made from some mystery-mahogany like wood that was a piece of shipping dunnage that a buddy gave to me a while back. I searched the web for a plan and found this one, seemed pretty simple and sized to fit on a bench top. I wanted to build it with adjustability in mind. I had another buddy get me some very small bearings for the arm pivot point. They have an I.D. of 1/8” and rides on a 1/8” brass rod. To keep the arm center and not wander on the rod, it put two lengths of brass tubing over the rod and they hold the bearings in place. I drilled out 7 bearing holes on each side of the arm and every other bearing hole has a screw hole that gets a washer to hold the bearings in place inside the arm. The pin angle is adjustable, as is the arm catch which changes when the arm pivot point is changed.

I made all of the brass parts by hand: the sling hook, the sling pin, trigger hook, lanyard rings and more. I used jute string for the sling and trigger hook lanyard. I cut up a piece of scrap leather from a local shop and made the sling pouch.

My daughter and I had a great time today testing it, making adjustments until it was able to throw a 2oz shrader valve 20ft with only one oops! But no damage done thanks to my daughter’s ninja-like reflexes.

. . . . and Fail!

Have a great day.


-- "I am endeavoring, ma'am, to construct a mnemonic memory circuit using stone knives and bear skins."

8 comments so far

View robscastle's profile


8542 posts in 3656 days

#1 posted 09-04-2016 06:58 AM

Good work looks like you both had a great time

-- Regards Rob

View jeff's profile


1458 posts in 4917 days

#2 posted 09-04-2016 07:20 AM

My son and I made one a long time ago when he was in grade school-watching it sling objects was fun.Nice project.

-- Jeff,Tucson,Az.

View woodbutcherbynight's profile


10889 posts in 3861 days

#3 posted 09-04-2016 12:12 PM

Great project, time with daughter = PRICELESS

-- Live to tell the stories, they sound better that way.

View Jim Jakosh's profile

Jim Jakosh

27687 posts in 4558 days

#4 posted 09-04-2016 08:28 PM

Great looking trebuchet!

Here is one to defend you house:

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View Ivan's profile


17282 posts in 4320 days

#5 posted 09-05-2016 08:43 AM

Outstanding woodworking and engineering combination. I like that old meshanisams.

-- Ivan, Croatia, Wooddicted

View kma2032's profile


6 posts in 4330 days

#6 posted 09-06-2016 01:07 AM

Thats really cool. Where did you find the plans? I want to build that next.


View JPJ's profile


821 posts in 4072 days

#7 posted 09-07-2016 01:45 AM

Nice job!

View JPJ's profile


821 posts in 4072 days

#8 posted 09-07-2016 01:47 AM

Nice job!

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