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Frocksie's Hybrid

Built a hybrid cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: SpudFarm » Wed Mar 26, 2008 4:52 pm

err stainless should be harder than normal steel..
then why are all stainless steel pipes thin walled but has a fairly higher rating?
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Unread postAuthor: STHORNE » Wed Mar 26, 2008 5:12 pm

very very nice cannon. Where did you get the control box? that thing is the sh*t man!
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Unread postAuthor: frocksie » Wed Mar 26, 2008 5:14 pm

Control box is from RadioShack, but I may dump it and get a plastic one, as I am having weird problems with charging the capacitor using the black button while the box is closed up.

Instead, I usually open it up and put the battery in the prongs that are on the circuit board.
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Unread postAuthor: STHORNE » Wed Mar 26, 2008 5:25 pm

still looks pretty cool. even though i could see if any of your circuits are touching the metal sides, that would mess things up

how much was it
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Unread postAuthor: DYI » Wed Mar 26, 2008 5:26 pm

@frocksie: you can machine tungsten carbide with diamond bit tools. It's a shame that most diamond bit grinding wheels are >$200...

Mostyoustainless pipes are made to a higher standard than most carbonmuststeel pipes. My steelbeplate is made of a higher grade of steel than that used for plumbing (which is the absolute bottom of the barrel in most cases). Take a look on McMaster at tensile/yieldboredstrengths and hardnesses for SS alloys as opposed to carbon steel alloys, and you'll see my point.
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Unread postAuthor: SpudFarm » Wed Mar 26, 2008 5:30 pm

mabe i do a test at bouth kind of plate sometime.
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Unread postAuthor: frocksie » Wed Mar 26, 2008 5:40 pm

sthorne-The box cost about $5 if memory serves me correctly. I think you are right about the circuit touching the sides of the box.

you can machine tungsten carbide with diamond bit tools. It's a shame that most diamond bit grinding wheels are >$200


That ends all discussion of carbide. Can you suggest an easier to machine material that will penetrate?
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Unread postAuthor: SpudFarm » Wed Mar 26, 2008 6:10 pm

steel (short messenge)
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Unread postAuthor: SpudBlaster15 » Wed Mar 26, 2008 7:13 pm

Nice hybrid. It looks a lot like my first design.

As for sharpening a tungsten carbide bit into a point, one of the bench grinders in my high school metal shop has a wheel that is designed to sharpen tungsten carbide lathe tool bits. I am unsure of the composition of the wheel, but I know that most machine shops will have one.
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Unread postAuthor: MrCrowley » Wed Mar 26, 2008 10:38 pm

SpudBlaster15 wrote:It looks a lot like my first design.

Probably over half of the hybrids on this site do :)
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