I want to stiffen my original hard plastic SSG stock. There are large recesses in the barrel channel that I want to epoxy Ti plates into to stiffen it. What product will adhere to hard plastic and Ti?
Thanks!
Thanks!
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Gunsmithing Bedding/epoxy for hard plastic
- Thread starter Blackbrush
- Start date
Re: Bedding/epoxy for hard plastic
Adhesion is a simple issue that can be covered with some holes in the stock to provide mechanical bonding points, what I would be more concerned about is the coefficient of thermal expansion of different materials. They need to be close, or it will self destruct by simple temp changes.
Adhesion is a simple issue that can be covered with some holes in the stock to provide mechanical bonding points, what I would be more concerned about is the coefficient of thermal expansion of different materials. They need to be close, or it will self destruct by simple temp changes.
Re: Bedding/epoxy for hard plastic
Thank you. I wonder about that as well. I'm not sure how HS and B&C make it work.
These thin plates will be placed vertically on the inside sides (as if under the checkering on the forend) and as the stock material is relatively thin there, I will need to be careful with how deep I go.
Thank you. I wonder about that as well. I'm not sure how HS and B&C make it work.
These thin plates will be placed vertically on the inside sides (as if under the checkering on the forend) and as the stock material is relatively thin there, I will need to be careful with how deep I go.
Re: Bedding/epoxy for hard plastic
What would be a better choice than Ti, Would be to get some Unidirectional Fiberglass or carbon fiber, and lay that in the recesses in long strips. The unidirectional cloth has extremely high strength in the long direction, and is also vastly cheaper than Ti. As for Epoxy, I like the West System products for general Composite work.
What would be a better choice than Ti, Would be to get some Unidirectional Fiberglass or carbon fiber, and lay that in the recesses in long strips. The unidirectional cloth has extremely high strength in the long direction, and is also vastly cheaper than Ti. As for Epoxy, I like the West System products for general Composite work.
Re: Bedding/epoxy for hard plastic
and..carbon or glas is much much lighter than titanium too.
Try make a sandwich construction. Maybe with 45deg angle carbon top and bottom with a lighter fill such as micro balloons between. Will make it torsional stiff too.
What normally helps most is to have the carbon running right through under the bedding.
and..carbon or glas is much much lighter than titanium too.
Try make a sandwich construction. Maybe with 45deg angle carbon top and bottom with a lighter fill such as micro balloons between. Will make it torsional stiff too.
What normally helps most is to have the carbon running right through under the bedding.
Re: Bedding/epoxy for hard plastic
Good stuff guys, thanks. I have both ti and cf material I can work with. Is the consensus still just any epoxy?
Good stuff guys, thanks. I have both ti and cf material I can work with. Is the consensus still just any epoxy?
Re: Bedding/epoxy for hard plastic
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Pittsbuilder</div><div class="ubbcode-body">What would be a better choice than Ti, Would be to get some Unidirectional Fiberglass or carbon fiber, and lay that in the recesses in long strips. The unidirectional cloth has extremely high strength in the long direction, and is also vastly cheaper than Ti. As for Epoxy, I like the West System products for general Composite work. </div></div>
Quoted for truth. This is the method I used to reinforce a Savage stock, and it worked rather well considering the modest investment in materials (the investment in time was another issue altogether).
The carbon cloth was purchased from Aircraft Spruce. They also carry West System epoxy products, but I usually buy that stuff at the local West Marine store.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Pittsbuilder</div><div class="ubbcode-body">What would be a better choice than Ti, Would be to get some Unidirectional Fiberglass or carbon fiber, and lay that in the recesses in long strips. The unidirectional cloth has extremely high strength in the long direction, and is also vastly cheaper than Ti. As for Epoxy, I like the West System products for general Composite work. </div></div>
Quoted for truth. This is the method I used to reinforce a Savage stock, and it worked rather well considering the modest investment in materials (the investment in time was another issue altogether).
The carbon cloth was purchased from Aircraft Spruce. They also carry West System epoxy products, but I usually buy that stuff at the local West Marine store.
Re: Bedding/epoxy for hard plastic
As was mentioned above, epoxy (or any other adhesive) will not adhere to plastic stocks. You can make holes for 'mechanical locks' but what you are in effect making is a bunch of little hinges. The stocks will still flex in a variable fashion. These stocks CAN NOT BE BEDDED. Trying to is just an exercise in futility.
As was mentioned above, epoxy (or any other adhesive) will not adhere to plastic stocks. You can make holes for 'mechanical locks' but what you are in effect making is a bunch of little hinges. The stocks will still flex in a variable fashion. These stocks CAN NOT BE BEDDED. Trying to is just an exercise in futility.
Re: Bedding/epoxy for hard plastic
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dinc</div><div class="ubbcode-body">As was mentioned above, epoxy (or any other adhesive) will not adhere to plastic stocks. You can make holes for 'mechanical locks' but what you are in effect making is a bunch of little hinges. The stocks will still flex in a variable fashion. These stocks CAN NOT BE BEDDED. Trying to is just an exercise in futility. </div></div>
And the world is flat and you will fall off the edge if you venture too near... and if you read it on the Interwebs, it *MUST* be true.
Tikka 300WM I bedded years ago. It still works great and has seen much hunting and range abuse.
Bedding polymer stocks is far from ideal, but not everybody has 5-700 for a custom stock and this is a viable bandaid to bridge the gap.
They must be cleaned very thoroughly to remove the mold release, roughed up over the entire surface with 80-100 grit or equivalent and then, as stated mechanical locks must be made. The stock above probably has a little divot every 1/4" after roughing, which may be the reason it has lasted so long. I was very thorough. It is bedded with Devcon 10110.
Good luck.
John
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dinc</div><div class="ubbcode-body">As was mentioned above, epoxy (or any other adhesive) will not adhere to plastic stocks. You can make holes for 'mechanical locks' but what you are in effect making is a bunch of little hinges. The stocks will still flex in a variable fashion. These stocks CAN NOT BE BEDDED. Trying to is just an exercise in futility. </div></div>
And the world is flat and you will fall off the edge if you venture too near... and if you read it on the Interwebs, it *MUST* be true.
Tikka 300WM I bedded years ago. It still works great and has seen much hunting and range abuse.
Bedding polymer stocks is far from ideal, but not everybody has 5-700 for a custom stock and this is a viable bandaid to bridge the gap.
They must be cleaned very thoroughly to remove the mold release, roughed up over the entire surface with 80-100 grit or equivalent and then, as stated mechanical locks must be made. The stock above probably has a little divot every 1/4" after roughing, which may be the reason it has lasted so long. I was very thorough. It is bedded with Devcon 10110.
Good luck.
John
Re: Bedding/epoxy for hard plastic
I've had pretty solid results with marinetex when working with plastic.
I've had pretty solid results with marinetex when working with plastic.
Re: Bedding/epoxy for hard plastic
Gonna read the specs on the Devcon I have and give it a go with cleaned and roughed surfaces.
Gonna read the specs on the Devcon I have and give it a go with cleaned and roughed surfaces.
