Custom Cannister

diver42 · March 21st, 2006, 03:24 AM

Does anyone know a source for a delrin cannister of a certain size? I'm looking for a cannister the diameter of a Halcyon Pro 14 but half as tall.

Thanks

***ericfine50*** · March 21st, 2006, 03:52 AM

Mcmaster Carr sells Derlin Rods. Also, look for old Pro-6 Canisters or a Pro-14 that you can cut down.

Randy956 · March 21st, 2006, 01:59 PM

Quote: (Originally Posted by diver42)

Does anyone know a source for a delrin cannister of a certain size? I'm looking for a cannister the diameter of a Halcyon Pro 14 but half as tall.

Thanks

Not sure of the dimensions of this canister, but there is an awful lot of DIY info on how to make one. Check Yahoo Groups to start.

If you need more info maybe I can help as I'm in the planning stages of building my own canister dive light.

BDH · March 21st, 2006, 02:05 PM

This might help (or not) they have 3 sizes of canister albeit there salvos but dimensions are shown.

http://www.batteryspace.com/index.as...OD&ProdID=2213

HTH

BDH

lizardland · March 21st, 2006, 02:10 PM

Find a Pro 14 and cut it down. However Pro 14's are not delrin, at least not all of them because mine certainly isn't delrin. Don't know what it is, too soft for delrin.

Getting a custom machined cannister will be very expensive. For starters a professional machine shop will charge a lot for a one off job, secondly solid delrin rod in those dimensions are not cheap.

You could do it yourself, you can work delrin with wood-working tools and you can pick up lathes pretty cheap.

BDH · March 21st, 2006, 02:37 PM

Derlin (Acetal Homopolymer)
Tecaform ( Acetal Copolymer ) POM
Tecafine ( High density Polyethylene ) PEHD

I machine these materials on a daily basis and they are all pretty much the same, good mechanical properties, chemical resistance etc etc you can pick up a metre of 100mm dia of the above from between £30 - £50.

And i agree with lizard a one off will cost you, I'd charge £90 an hour labour plus materials, so your looking at around £120 - £160 some may charge more.

http://rswww.com/cgi-bin/bv/rswww/su...eID=uknetscape

Check out RS components for price of each of the above materials.

BDH

Joe Hesketh · March 21st, 2006, 02:41 PM

Quote: (Originally Posted by lizardland)

Find a Pro 14 and cut it down. However Pro 14's are not delrin, at least not all of them because mine certainly isn't delrin. Don't know what it is, too soft for delrin.

The Pro14s are polythene (HDPE) and have a glued bottom (not bored from a rod like the smaller cans). You could buy some HDPE pipe to make one (save all the lathe work) but then you'd probably not get the right size to fit a Pro14 lid (if that's what you were planning on doing?).

diver42 · April 26th, 2006, 09:48 PM

Thanks for all the advice. I ended up asking Corey at Halcyon about it, and he had them make me a Pro 7 cannister. That's the right size. Btw, Corey has been very helpful.

As previously posted, H uses HDPE for the Pro 14 (and Pro 7). I don't think any of us is worried about the strength. But it turns out that the bulkhead between the batteries is required to keep the cannister from bowing at pressure.

This turns out to be important. I moved the pipe clamps up on the cannister so that I could actually reach the switch. Then I really cranked down on them. It turned out that the pressure was enough to cause the cannister to bow just a little. The tolerances are pretty tight. So I couldn't fit the bulkhead past the pipe clamps. Rather than deal with loosened pipe clamps, I filed down the bullkhead just a little. Now it all fits fine. I should note, this was only true of the original bulkhead. The bulkhead on the second battery I assembled myself slips by without a problem.

I've attached a couple of pictures of the two cannisters in case anybody is interested.

sasdasdaf · April 26th, 2006, 11:34 PM

Ooh, the Pro 7 looks really cute. Short and stumpy. Is the small d-ring on the canister for a primary reel?

diver42 · April 27th, 2006, 12:45 AM

Quote: (Originally Posted by sasdasdaf)

Ooh, the Pro 7 looks really cute. Short and stumpy. Is the small d-ring on the canister for a primary reel?

It's good for a primary; it's also good for a water bottle on long dives that traverse cenotes. You can surface for a drink.

March 21st, 2006, 03:24 AM	#1 (permalink)
diver42(Offline) New Member Join Date: Dec 2005 Location: Durham, NC Posts: 107	Custom Cannister Does anyone know a source for a delrin cannister of a certain size? I'm looking for a cannister the diameter of a Halcyon Pro 14 but half as tall. Thanks

March 21st, 2006, 01:59 PM	#3 (permalink)
Randy956(Offline) New Member Join Date: Mar 2006 Location: Columbus, OH Posts: 89	Diy Quote: (Originally Posted by diver42) Does anyone know a source for a delrin cannister of a certain size? I'm looking for a cannister the diameter of a Halcyon Pro 14 but half as tall. Thanks Not sure of the dimensions of this canister, but there is an awful lot of DIY info on how to make one. Check Yahoo Groups to start. If you need more info maybe I can help as I'm in the planning stages of building my own canister dive light.

March 21st, 2006, 02:05 PM	#4 (permalink)
BDH(Offline) New Member Join Date: Nov 2005 Location: Putney, London Posts: 64	try this site This might help (or not) they have 3 sizes of canister albeit there salvos but dimensions are shown. http://www.batteryspace.com/index.as...OD&ProdID=2213 HTH BDH

March 21st, 2006, 02:10 PM	#5 (permalink)
lizardland (Online) LCS Join Date: Nov 2005 Location: Evidently Chickentown Posts: 593	Find a Pro 14 and cut it down. However Pro 14's are not delrin, at least not all of them because mine certainly isn't delrin. Don't know what it is, too soft for delrin. Getting a custom machined cannister will be very expensive. For starters a professional machine shop will charge a lot for a one off job, secondly solid delrin rod in those dimensions are not cheap. You could do it yourself, you can work delrin with wood-working tools and you can pick up lathes pretty cheap. __________________ Can you imagine drifting along in the sea with your mouth open and a load of f***ing plankton going in? You'd like it, would you? www.westons-cider.co.uk The Lot isn't the only place to dive: http://www.lulu.com/content/613554

March 21st, 2006, 02:37 PM	#6 (permalink)
BDH(Offline) New Member Join Date: Nov 2005 Location: Putney, London Posts: 64	Derlin Derlin (Acetal Homopolymer) Tecaform ( Acetal Copolymer ) POM Tecafine ( High density Polyethylene ) PEHD I machine these materials on a daily basis and they are all pretty much the same, good mechanical properties, chemical resistance etc etc you can pick up a metre of 100mm dia of the above from between £30 - £50. And i agree with lizard a one off will cost you, I'd charge £90 an hour labour plus materials, so your looking at around £120 - £160 some may charge more. http://rswww.com/cgi-bin/bv/rswww/su...eID=uknetscape Check out RS components for price of each of the above materials. BDH

March 21st, 2006, 03:52 AM	#2 (permalink)
*ericfine50*(Offline) Moderator Join Date: Nov 2005 Location: MA Posts: 622	Mcmaster Carr sells Derlin Rods. Also, look for old Pro-6 Canisters or a Pro-14 that you can cut down.

March 21st, 2006, 02:41 PM	#7 (permalink)
Joe Hesketh (Online) New Member Join Date: Nov 2005 Location: London, UK Posts: 657	Quote: (Originally Posted by lizardland) Find a Pro 14 and cut it down. However Pro 14's are not delrin, at least not all of them because mine certainly isn't delrin. Don't know what it is, too soft for delrin. The Pro14s are polythene (HDPE) and have a glued bottom (not bored from a rod like the smaller cans). You could buy some HDPE pipe to make one (save all the lathe work) but then you'd probably not get the right size to fit a Pro14 lid (if that's what you were planning on doing?).

April 26th, 2006, 11:34 PM	#9 (permalink)
sasdasdaf(Offline) New Member Join Date: Dec 2005 Location: Singapore Posts: 375	Ooh, the Pro 7 looks really cute. Short and stumpy. Is the small d-ring on the canister for a primary reel?

April 27th, 2006, 12:45 AM	#10 (permalink)
diver42(Offline) New Member Join Date: Dec 2005 Location: Durham, NC Posts: 107	Quote: (Originally Posted by sasdasdaf) Ooh, the Pro 7 looks really cute. Short and stumpy. Is the small d-ring on the canister for a primary reel? It's good for a primary; it's also good for a water bottle on long dives that traverse cenotes. You can surface for a drink.