Rocketpoxy in 1:1 epoxy cartridges????

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ColumbiaNX01

ColumbiaNX01

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You know the epoxy canisters that have the plunger and the epoxy tips and using the gun with the plunger to push the epoxy through the tips and it mixes it as it comes out??

Well mcmasters car sells the empty canisters and plungers so that all u have to so is add the 2 part epoxy in each cylinder and pull the trigger.

Rocketpoxy is 2 part 1:1 epoxy. It is thick like peanut butter. Would it be possible to do this with rocketpoxy? Just want to save time from having to pre mix it and wait 30 minutes before fillet because doing it this way would not add air bubble to the mix vs. Mixing it on a plate you add air to it.

https://www.mcmaster.com/cartridges
 
ColumbiaNX01 said:
You know the epoxy canisters that have the plunger and the epoxy tips and using the gun with the plunger to push the epoxy through the tips and it mixes it as it comes out??

Well mcmasters car sells the empty canisters and plungers so that all u have to so is add the 2 part epoxy in each cylinder and pull the trigger.

Rocketpoxy is 2 part 1:1 epoxy. It is thick like peanut butter. Would it be possible to do this with rocketpoxy? Just want to save time from having to pre mix it and wait 30 minutes before fillet because doing it this way would not add air bubble to the mix vs. Mixing it on a plate you add air to it.

https://www.mcmaster.com/cartridges
Click to expand...

Well I first have to see if when u mix rocketpoxy 1:1 if it is by weight or by volume. When I have always mixed it was equal amounts of grams on my scale. Plus, it may be to thick.
 
I always mix it by weight. And I doubt it will work. It's super thick stuff, though it seems to get a little thinner once it's mixed.
 
Whether if it comes out of containers, or squeezed from a caulk gun, the cure time will be the same.
You may have less air bubbles, but you still need to wait till it thickens.
To speed up cure you can stick a hairdryer [on low] in front end of tube blowing warm air to rear, preheating the tube/fin joint area.

But if you are building any extreme projects, what's a few extra minutes to attain perfection???? :cool:
 
I have used the gun and tips for years with Hysol 9462. the tips come in 2 lengths, the shorter ones always had a problem getting mixed well as they are to short. The longer ones worked better.
 
I do not have any issue with cure time, that's not my goal. Just wondering if it would work, but might be to thick. From my experience with hysol and other epoxies when mixed in the tips there is next to nothing of bubble to speak of. That aspect works but the end all be all I think will be the thickness of the rocketpoxy that might be a brick wall.
 
I have not used rocketpoxy, so can't say to that. What I was getting at was that the short tips do not allow enough length for it to get fully mixed and then will not set up, no matter what cure time is allowed.
 
David Schwantz said:
I have not used rocketpoxy, so can't say to that. What I was getting at was that the short tips do not allow enough length for it to get fully mixed and then will not set up, no matter what cure time is allowed.
Click to expand...

Whats your definition of short tips and long tips? The tips I have gotten from Mcmaster Carr. I thought there was just a standard length they sell. How long in inches are there you have used?
 
Would it be possible to do this with rocketpoxy? Just want to save time from having to pre mix it and wait 30 minutes before fillet because doing it this way would not add air bubble to the mix vs. Mixing it on a plate you add air to it. [URL said:
https://www.mcmaster.com/cartridges[/URL]
Click to expand...

You will still have to mx it and that will induce air bubbles. I use RP exclusively for fillets and always let it sit. Though its a thick epoxy, it is still to runny to apply and draw the fillets immediately after mixing. It wont hold the contour if drawn immediately. Whats the rush?
 
Jozef said:
You will still have to mx it and that will induce air bubbles. I use RP exclusively for fillets and always let it sit. Though its a thick epoxy, it is still to runny to apply and draw the fillets immediately after mixing. It wont hold the contour if drawn immediately. Whats the rush?
Click to expand...

There is no rush. Read my OP. Using the cartridge and tips eliminates the mess and weighing and mixing. Just wondering if it would work.
 
I would use the longer of the 2. Like I said, I can't state about rocketpoxy, but I use Hysol 9462 stright out of the gun, no mixing tube. I mix in a bathroom dixie cup, they don't have wax surface, does not get air bubbles and can make fillet right away. Heres a pic of the fillets with hysol.
 

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David Schwantz said:
I would use the longer of the 2. Like I said, I can't state about rocketpoxy, but I use Hysol 9462 stright out of the gun, no mixing tube. I mix in a bathroom dixie cup, they don't have wax surface, does not get air bubbles and can make fillet right away. Heres a pic of the fillets with hysol.
Click to expand...


Oh yeah. I have used hysol alot fillets are nice. Hysol is only required when doing extreme min diameter rockets. Rockets with fin tabs and such hysol is over kill and waste of money. That's why rocketpoxy is perfect for any regular project. I would use hysol but its expensive when not building a mach busting high altitude rocket.
 
I use Hysol 9462 with the long mixing tips for all of my rockets (except cardboard/plywood...those get Titebond 2). No runs, no drips, no mess, low odor.

I don't mind spending $20 on epoxy for rockets that can easily cost several hundred dollars. The convenience is worth the extra cost.
 
The thought alone of squeezing rocketpoxy through the mixing tips is making my forearms ache.

I think it'd be a cool idea if the viscosity was lower. And it seems to me that the hardener is thicker than the resin, so it may be like those mentadent toothpastes where the thinner blue side always squirts faster than the white.
 
I mix in cups and then if I need to inject it into something I use a syringe. And I do use the syringe to lay it down for fillets. I then run my naked finger over the bead to smooth it out. After you have done enough, you will not even need to sand them. Just remove plunger and load from the end. My local hobby store carries them but so does tractor supply. Look in the farm, horse or cow section.
 
How much is rocketpoxy per tube? Hysol I get from Dreamworks RC, last I got was $ 65 for 5 tubes. Used to be able to buy a case for just over $100, but that supplier is no more.
 
I use RocketPoxy extensively. It’s way to thick to push through a syringe. RocketPoxy is a great product. The instructions state that you can mix on a one to one ratio either by weight or volume.

You can get some small air bubbles when you are making fin fillets. The instructions state to run a heat gun back and forth over the fillet to remove the air bubbles. This method helps, but doesn’t completely remove all of the bubbles. The small bubbles are easy enough to fill during the painting prep process.

I used Proline 4500 epoxy last month for the first time. While the Proline is more difficult to install for newbies do to its very liquid state, it doesn’t leave any air bubbles. The Proline 4500 is easier to sand than the RocketPoxy. The RocketPoxy is easier to install fin fillets with do to its thicker consistency.

All the best,
Bob
 
ColumbiaNX01 said:
You know the epoxy canisters that have the plunger and the epoxy tips and using the gun with the plunger to push the epoxy through the tips and it mixes it as it comes out??

Well mcmasters car sells the empty canisters and plungers so that all u have to so is add the 2 part epoxy in each cylinder and pull the trigger.

Rocketpoxy is 2 part 1:1 epoxy. It is thick like peanut butter. Would it be possible to do this with rocketpoxy? Just want to save time from having to pre mix it and wait 30 minutes before fillet because doing it this way would not add air bubble to the mix vs. Mixing it on a plate you add air to it.

https://www.mcmaster.com/cartridges
Click to expand...

When you initially mix rocketpoxy, it flows like honey. I doubt you will have any trouble with the epoxy plunging applicator. I am tempted to get some and try it out.

Waiting 30 minutes is still ideal in order for it to release any air bubbles and to allow for the epoxy to harden into a peanut butter consistancy. This is the moment where you shape your fillets.

I say why not try it
 
Rocketpoxy has an equal weight-to-volume ratio in both parts; i.e., you can mix by weight or volume indiscriminately.
 
With the Rocketpoxy how hard is it to pull? Has anyone tried to change the color from black in any way? The reasons I ask is I've been adding a small amount of powder pearls to the epoxy I've been using in my fin filets.
 
Estesbasher said:
With the Rocketpoxy how hard is it to pull? Has anyone tried to change the color from black in any way? The reasons I ask is I've been adding a small amount of powder pearls to the epoxy I've been using in my fin filets.
Click to expand...

Pull as in pull fillets? It's relatively easy, you just have to pay attention to it's viscosity and set point and pull when you're most comfortable that it will hold it's shape. The only real tip is to use some alcohol on your tool/finger/whatever so that it doesn't stick to the tool and pulls cleanly.

Other than that, it does take dye easily. In it's native state, it's a light sand color, but I've done black, yellow, red, and green dye to match various rocket kits. https://www.madcowrocketry.com/pigments/ The dye is a cream that's added to the mix, and will change the mix a little by way of viscosity and set times. A TINY bit of black goes a LONG way, but the other colors require a bit more pigment. If you let the pigments set unused for a while, you'll need to put a rod or other mixer in them and stir them really well before using them, which is what I also recommend you do upon initial purchase.

Also, don't get any any of the pigments on anything that you don't want it on 'cause the stain ain't coming off!
 
Last edited:
You can buy different colors of tint, basically to match the Curtis Turner colored tubes that Madcow sells.

RocketPoxy is easy to mix and easy to apply, but it does bubble, sometimes leaving little holes or bumps in your fillets. These can be corrected by sanding and/or filling with Bondo, etc. Some people like to strengthen by adding microballoons, etc., but I know nothing about that other than what I've read here.
 
Never add anything to RocketPoxy as per the data sheet...all needed additives already come mixed in. Adding any other "stuff" just weakens it.
[color dye excluded]

Some folks have mentioned added thickeners in theirs builds, however this is frowned upon by the manufacturer.
 

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