Carl wrote an instructable explaining how to build a water mortar (previously seen in our Flickr pool) -
This water mortar is made from PVC using a variation on the “drill press lathe” technique from the book “Eccentric Cubicle.” The finished product launches over a quart of water per shot!
Thanks, Carl! – Link
Related: Water Mortar – Link
From the Maker store: Eccentric Cubicle – Link
From the pages of MAKE:
Head-Mounted Water Cannon. Use steel fire-extinguisher power to pummel plastic squirt toys. MAKE 07 – page 112. Subscribers–read this article now in your digital edition or get MAKE 07 @ the Maker store.