How to Cast an epoxy barrel?
-
- Specialist 4
- Posts: 458
- Joined: Tue Aug 02, 2011 12:31 pm
- Contact:
hey JSR how do i cast a barrel for my gun? like 6mm inner diameter and 15mm outer dia.
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 321 times
Do you have some 6mm rod? Can't do much without it.
A good source is printer cartridges.
I would definitely try to find another solution (and there are several) before resorting to casting my own barrel. Where are you located again?
A good source is printer cartridges.
I would definitely try to find another solution (and there are several) before resorting to casting my own barrel. Where are you located again?
hectmarr wrote:You have to make many weapons, because this field is long and short life
-
- Specialist 4
- Posts: 458
- Joined: Tue Aug 02, 2011 12:31 pm
- Contact:
England. and i have a chrome tube that's 1/2" do i put a 6mm tube inside and fill with epoxy and then pull the tube out when its rubbery then it hardens into resin
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 321 times
Surely you have a hobby/model shop near by that stocks brass and aluminium tubing?
hectmarr wrote:You have to make many weapons, because this field is long and short life
Goatz, go to B and Q and walk down the gas and plumbing aisle (something like that) there is usually a load of steel and aluminuim tubes with a perfect I.D. for BBs. If you're not sure just bring a BB with you and check if it fits.
You can also get brass tubes that are perfect for .177 pellets.
You can also get brass tubes that are perfect for .177 pellets.
I visit occasionally to make unrelated posts.
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 321 times
http://www.ebay.co.uk/itm/7mm-Brass-K-a ... 5467783298
Typically these have 0.5mm wall thickness so the 7mm OD should have 6mm ID
Typically these have 0.5mm wall thickness so the 7mm OD should have 6mm ID
hectmarr wrote:You have to make many weapons, because this field is long and short life
- Technician1002
- Captain
- Posts: 5189
- Joined: Sat Apr 04, 2009 11:10 am
Normal way to do this is to lay up a fiberglass or carbon fiber tube on a mandrel. Resin alone will be too weak.
-
- Specialist 4
- Posts: 458
- Joined: Tue Aug 02, 2011 12:31 pm
- Contact:
well b&q has 8mm brass gas fire tubing can i put that inside the big barrel and fill with epoxy as a spacer?[/code]
- jackssmirkingrevenge
- Five Star General
- Posts: 26179
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 543 times
- Been thanked: 321 times
What's wrong with getting cheap 6mm tubing from eBay? Seriously, casting a barrel out of epoxy should be a last resort, unless you have some peculiar reason for wanting to do it that I'm not aware of.
hectmarr wrote:You have to make many weapons, because this field is long and short life
<a href="http://www.diy.com/diy/jsp/bq/nav.jsp?a ... d_tube">Go to B&Q and get this</a>
Take a 6mm airsoft pellet with you or whatever you wanted to fire and make sure you get one you can blow the pellet through.
.22 airgun pellets can be fired from it but they are a little loose since they are ~5.5mm and the tube is 6.0mm ID.
Don't faff about making a barrel with epoxy, you'll make a mess and it still won't be as good as a length of that aluminium tube.
Take a 6mm airsoft pellet with you or whatever you wanted to fire and make sure you get one you can blow the pellet through.
.22 airgun pellets can be fired from it but they are a little loose since they are ~5.5mm and the tube is 6.0mm ID.
Don't faff about making a barrel with epoxy, you'll make a mess and it still won't be as good as a length of that aluminium tube.
- Technician1002
- Captain
- Posts: 5189
- Joined: Sat Apr 04, 2009 11:10 am
Found a video showing the manufacture of carbon fiber tubes.
http://www.youtube.com/watch_popup?v=KfQGtYG7zg8&vq
The could be hand done. Fiberglass cloth could be used instead of the thread shown in the video.
http://www.youtube.com/watch_popup?v=KfQGtYG7zg8&vq
The could be hand done. Fiberglass cloth could be used instead of the thread shown in the video.
- POLAND_SPUD
- Captain
- Posts: 5402
- Joined: Sat Oct 13, 2007 4:43 pm
- Been thanked: 1 time
It would be cool to have a lighter alternative to steel... unfotunatelly the problem here is that you can't tell how high it is ratedThe could be hand done. Fiberglass cloth could be used instead of the thread shown in the video.
Children are the future
unless we stop them now
unless we stop them now
- Fnord
- First Sergeant 2
- Posts: 2239
- Joined: Tue Feb 13, 2007 9:20 pm
- Location: Pripyat
- Been thanked: 1 time
- Contact:
Fiberglass is roughly equivalent to mid-grade aluminum when done correctly. Figure around 30kpsi tensile strength, of course any flaws you have in it will drop that somewhat. Still, compared to metal it has favorable failure characteristics.
- Technician1002
- Captain
- Posts: 5189
- Joined: Sat Apr 04, 2009 11:10 am
I have some ladders and pole trimmers for trees that have fiberglass construction. The tree trimmer is quite strong. The fiberglass is to prevent electrical accidents if you have a line through your tree.
The strength of fiberglass ladders is well known.
The strength of fiberglass ladders is well known.