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Signing UpStep 1: The dragon's action
Also shown is a more elaborate antique carved example in "forbidden book" form, where the more common snake or viper figure is used. It has a wickedly-sharp spike where my dragon features a softer material. Note the wood "binding" on the bottom of the toy (photo credit: ebay user bubbleking)













































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The mechanism is simple, but requires careful attention to details. Of course there are any number of variations on the same basic mechanism. Thx Denger.
I find the snake version seems to be generally the most common I've seen in the US.
I was so happy to purchase the 1960's World's Fair dragon version on eBay for a few bucks.
Unfortunately I damaged (broke!) the neck of the dragon figure while dismantling to map out the mechanism. Should not be a difficult repair though!
Thx Denger.
Couple things:
1. I didn't have a table saw (I'm only 14 years old lol) to make the grooves, so what I did is I took a piece of 1/8 inch plywood the size of one of the sides and cut a second piece into a 1/8 x 1/8 x 3-1/2 piece and a 1/8 x 2-1/4 x 3-1/2 piece. I glued those pieces onto the first original side piece so that there is a 1/8 inch gap in between, making a groove. (hard to explain, see picture)
2. I found that when I drilled the 1/16 inch hole in the center of the dragon, it didn't turn on the nail very well, so I ended up making a 7/64 bit I had, and it turned perfectly.
3. I had to cut a sort of V into the center of the top of the "front end" piece because the string that I had glued onto the bottom of the slide kept crashing into the front end, which stopped the dragon from rising properly.
Overall, a great instructable!
1. Great idea.
2. You're so right- as I mentioned, the exact size of the bit will depend on the diameter of the nail you use... I think just going with the 7/64th" should be in the plan in the first place...
3. The V would work... my front end piece allowed like 1/16" space for the thin string so it wasn't a problem.
Show us a photo or two!!
Thanks squirreMLM.
and gotta love the Rat Fink.
Huge fan of Big Daddy Roth since middle school in '67.
Honestly, i had to remove the paper label "bottom" from the World's Fair example shown above to figure it out myself... at least it's an easy fix to fasten the label back on!
You probably couldn't tell the exact source of the shock so maybe just put the two electrodes on the side of the box (fingers touch one contact, thumb the other) and have power turn on when the dragon is all the way out of the box.
In high school we did the "shocking" thing with our chemistry professor where he had the box with the crank and each of us in turn got our hands wet and held the wires in our hands, seeing how much juice we could take... pretty sadistic!
The element of surprise you suggest would be a lot better!
Nice instructable!
I like it very much.!
Nice project, for assassinations.
I imagine the pointy end on that snake in Step 1 would seriously put the hurt on you, with or w/o a neuro...
there is a way to avoid the table saw for the groove: use and old drawer, wooden box or anything that has allready the channel for the slide. Many drawers has the bottom part living in such slots.
i also tryied with a knife and a metal ruler and it is not so dificult to carve it if the wood is not too hard. if you have a nice thin enough file for finnishing the slot you are all set.
but i picked up last night an old, nice wooden drawer with slots in both sides in the street and it will be just perfect for my dragon box.
thanks
Thanks lobo0x7!
Added action vid to Step 2: The dragon's action
Thanks all for your encouragement, this is my first Instructible after lurking for a while!
More to come, Kev
High Five for you!
(Any chance of a video of it working?)
Great instructable!