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Posted: Wed Mar 26, 2008 4:52 pm
by SpudFarm
err stainless should be harder than normal steel..
then why are all stainless steel pipes thin walled but has a fairly higher rating?
Posted: Wed Mar 26, 2008 5:12 pm
by STHORNE
very very nice cannon. Where did you get the control box? that thing is the sh*t man!
Posted: Wed Mar 26, 2008 5:14 pm
by frocksie
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.
Posted: Wed Mar 26, 2008 5:25 pm
by STHORNE
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
Posted: Wed Mar 26, 2008 5:26 pm
by DYI
@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.
Posted: Wed Mar 26, 2008 5:30 pm
by SpudFarm
mabe i do a test at bouth kind of plate sometime.
Posted: Wed Mar 26, 2008 5:40 pm
by frocksie
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?
Posted: Wed Mar 26, 2008 6:10 pm
by SpudFarm
steel (short messenge)
Posted: Wed Mar 26, 2008 7:13 pm
by SpudBlaster15
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Posted: Wed Mar 26, 2008 10:38 pm
by MrCrowley
SpudBlaster15 wrote:It looks a lot like my first design.
Probably over half of the hybrids on this site do
