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The Offcial Machinist Thread: Revised 01/04/2014

A place to ask general spud cannon related questions.
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Unread postAuthor: wyz2285 » Fri Nov 23, 2012 8:35 am

Hum but you can do a lot custom parts with the tap (I´d ask for a couple more of these later :P )...
So how about 20 euros?
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Last edited by wyz2285 on Fri Nov 23, 2012 2:11 pm, edited 1 time in total.
CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: jackssmirkingrevenge » Fri Nov 23, 2012 8:40 am

You caught me in a good mood because it's Friday ;P 20 euros, but you will probably have to wait about a month till I get the tap, make it and send it. If you're fine with that I'll go ahead and order the tap.

How deep do you need the 5/8" threads... for the whole 50mm? Or is say 30mm enough?

Also, is the 1/4" thread you mentioned 1/4" BSP?
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Unread postAuthor: wyz2285 » Fri Nov 23, 2012 9:13 am

I'll need need to see the 5/8, it need to fit a pt regulator. Yes 1/4 that we use around here (Well a mouth from here it´s xmas, it would be a great present to myself :D ). I can wait. Thanks
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Last edited by wyz2285 on Fri Nov 23, 2012 2:13 pm, edited 1 time in total.
CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: jackssmirkingrevenge » Fri Nov 23, 2012 11:08 am

To thread the whole part I would need to also buy a bottom tap:

Image

That would not make it worth 20 euros.

A normal tap only will mean that around 5/8" from the end of the hole would not be fully threaded:

Image
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Unread postAuthor: wyz2285 » Fri Nov 23, 2012 11:24 am

30mm it's enough :), and a little chamfer in the start of the threading for the oring. Same as a paintball tank.
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: jackssmirkingrevenge » Fri Nov 23, 2012 11:28 am

Can you give me the o-ring diameter (as installed)?
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Unread postAuthor: wyz2285 » Fri Nov 23, 2012 11:34 am

I don't really need a groove for the oring. Can you check one of your paintball regulators? I just want to install one on it. I'd measure the oring but I'm not home now
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: jackssmirkingrevenge » Fri Nov 23, 2012 11:41 am

If you want the o-ring to seal, you need a recess to be cut for it, it won't seal on the thread. Don't really want to take my tanks apart...

No rush, it will be a week at least before the tap arrives.
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Unread postAuthor: wyz2285 » Fri Nov 23, 2012 11:43 am

ok, I will pm you later tonight :)
Edit diagram:
(A 45 degree 1.5mm chamfercould work too, maybe easier to make? )
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: jackssmirkingrevenge » Fri Nov 23, 2012 3:21 pm

wyz2285 wrote:(A 45 degree 1.5mm chamfercould work too, maybe easier to make? )


Boring a straight section slightly undersize to the o-ring will work better and be easier do make.

It's the method used here ;)

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Unread postAuthor: wyz2285 » Fri Nov 23, 2012 3:31 pm

Well, you are the machinist, not me :D as soon as it works :wink:
BTW, how much would that pen gun cost?
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: jackssmirkingrevenge » Fri Nov 23, 2012 3:43 pm

A fully machined one like that, material cost is low but the amount of time it would take to put together and finish means that I wouldn't sell one for less than €200.
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Unread postAuthor: wyz2285 » Fri Nov 23, 2012 3:48 pm

Things like that it's what makes me wish a lathe+mill :roll:
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: Labtecpower » Fri Nov 23, 2012 7:33 pm

You wo'nt need any internet connection tyo fap, profit :)

I could easily churn up stuff like this 100 at a time at work, if onluy I hadf de time to do so :D

Do you need any more toolign jSr? It wouldn't be tyoo hard fgor me to buy some stuff from my boss with a aghuge discount, not to mention the higher quality we usually get at the machining department.
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Unread postAuthor: Crna Legija » Fri Nov 23, 2012 8:13 pm

Labtecpower wrote:You wo'nt need any internet connection tyo fap, profit :)

I could easily churn up stuff like this 100 at a time at work, if onluy I hadf de time to do so :D

Do you need any more toolign jSr? It wouldn't be tyoo hard fgor me to buy some stuff from my boss with a aghuge discount, not to mention the higher quality we usually get at the machining department.



go home lab your drunk!
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