Step 5: Paint

Don't use a spray paint, it melts the foam. I simply went to the hardware store and either look in the OOPS paint section or just buy a gallon of black latex paint. The paint goes on very easy, and I used an acrylic white paint and a stencil for the cannon's name. This one was obviously stolen from a French Galleon.

Your now authentic pirate cannon can be accessorized by adding a pirate. 

This process does make quite a sturdy piece. The cannon below survived being passed around 80 other pirates on a pub crawl.

Anybody try a hot knife to trim to shape? If so, did it work?
I'd like to know this too, so hopefully someone will let me know if I can justify to the wife to buy a hot knife. I also remember seeing somewhere on hoe to make your own too.
I think that's been done but can't remember where. I saw someone lathe giant easter eggs once though and roughcutting it with a sawblade.
I think that's been done but can't remember where. I saw someone lathe giant easter eggs once though and roughcutting it with a sawblade.
<p> I have no intention of &ldquo;dissing&rdquo; this ible as it's very good, so please, no one explode all over me about this.<br> <br> However... I would have approached the project differently to reduce the amount of care and accuracy required in the removal of excess material<br> <br> I would have made a half-section full scale drawing of the profile of the cannon, and used that to determine the diameter of each foam section [just like bulkheads, or &quot;stations&quot; as in building boats, ships, and aircraft.<br> <br> It then would have been very easy to cut the center hole [barrel bore] and the perfectly round outer profile of EACH section on an ordinary &quot;jigsaw.&quot; With some of calculation and some &ldquo;trial and error&rdquo; cutting, EVEN the TAPER of each section could be matched!<br> <br> After that, glue the sections together, which by being of a smaller size will require much less adhesive.<br> <br> With the only slight difference in the diameter of each section, the &quot;tapering&quot; of the sections into the smooth barrel shape would have required the removal of very little material. This could be done by hand and &quot;rotating&quot; the work piece as was done in this ible, or alternatively if there were a lot of material to be removed...<br> <br> Then I would use scrap lumber to make a &quot;bed&quot; for a simple lathe with vertical end planks, in one of which I would mount a variable speed drill motor, and make an adaptor [expandable rubber-like foam &quot;plug&quot;] to couple the drill motor to the 'business&quot; end [hole in it] of the barrel, and a dead center for the tail end.<br> <br> Then with the &quot;cannon&quot; barrel slowly but steadily rotating I would use a wood rasp, or a body repair &quot;cheese grater&quot; rasp to &quot;turn&quot; and smooth the cannon. IF there were very little material to be removed, this could be accomplished with nothing more than a couple of grades of sandpaper.<br> <br> &quot;Turning&quot; a square cross section blank can be VERY difficult, BUT IF each of the sections is already round, and the bore hole already there, the only &quot;forming&quot; required would be to blend / &quot;taper&quot; the separate sections into each other.<br> <br> Again, this is NOT a negative comment on this excellently accomplished project, just a suggestion for another means of doing it.<br> &nbsp;</p>
see this instructable <br>https://www.instructables.com/id/Pirate-Cannon---A-working-replica-of-a-naval-canno/ <br> <br>
Why you no good sonofa!!!<br><br>Just joking of course, great suggestions! That's why put this thing up on this website, I want to learn from everyone. Your solution may work, but for me, I like taking as many shortcuts as I can, and would not have the patience for that! If I were to make another more realistic looking canon, I would probably have to go your way on it.<br><br>If I were to do this again (in a non realistic way, since it would be for a pub crawl) , I think I would do a hybrid approach, like you said, I would at least make some attempt at a template. That would save on gluing and all the mess I had made. BUT, if an electric knife works like I've heard, I might still just glue it all and carve up the sucker too.<br><br>Thanks for your tips!
Or you could get some really large PVC or a concrete mold tube, build up papermache and seal it with marine grade varnish. Light, low cost and a lot easier than lathe work and will last for a couple of years of Trick or Treat or Pirate raids.
you need a giant lathe lol.<br>
You know, I was really thinking of that! Was going to use a broom handle on a power drill. Maybe someone else will post something!
Reminded me of this. http://www.youtube.com/watch?v=hMkLk2t8Qlo&amp;feature=channel_video_title
Arrrrrrrr!. Actually th best tool to cut ye foam is me dear grandmamma's electric kitchen<strike> scimitar</strike> knife. &nbsp;You might want to put two stubby pegs(don't mention pegs) on the sides so you can mount the cannon on a rolling wood base.
Blustering barnacles! Good idea! Now where ta get one is thar challenge!

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