Question

[urbanrifleman]

I have an MPA chassis that was bedded for another action. It is an aluminum chassis and I was wondering if I could cook out the bedding on some easy way

 

[ELR LVR]

I have an MPA chassis that was bedded for another action. It is an aluminum chassis and I was wondering if I could cook out the bedding on some easy way

Keep in mind
Alum has twice the thermal expansion as steel does
if you use heat hot enough to take out epoxy....it may warp the chassis
I'd skim over it with an end mill then skim bed
---
but others may have ideas , a heat gun may be worth a try without hurting the chassis
or as others have used an iron to remove a glue in
maybe drill some screws into the bedding then set an iron on the chassis for 20 mins and try to pull out the bedding

 

[ronemus]

Cooking it would probably destroy or alter the dye in the anodizing, producing a marked color shift - I have used that method, but I'm not big on aesthetics. If there is powder coating it would also be affected, and any polymer parts would have to be removed first. I would prefer to use a die grinder/Dremel/shaft tool with a cutting burr since I don't have a mill. The fresh, rough surface would be a benefit as any oils would be removed and the new epoxy would bond better. Unfinished aluminum forms an oxide layer that thickens over time, and it will reduce the strength of the epoxy bond - roughening immediately before epoxy application is highly recommended.

 

[ELR LVR]

Cooking it would probably destroy or alter the dye in the anodizing, producing a marked color shift - I have used that method, but I'm not big on aesthetics. If there is powder coating it would also be affected, and any polymer parts would have to be removed first. I would prefer to use a die grinder/Dremel/shaft tool with a cutting burr since I don't have a mill. The fresh, rough surface would be a benefit as any oils would be removed and the new epoxy would bond better. Unfinished aluminum forms an oxide layer that thickens over time, and it will reduce the strength of the epoxy bond - roughening immediately before epoxy application is highly recommended.

Agreed
and good call with Alum oxidation, it only takes 2 mins to form an oxide layer

 

[NZ_Fclass]

I woud take the Dremmel/die grinder to it and then skim bed. If it's a Remington/ Clone, examine the tang area Carefully - I have seen that area be a bit mishaped and needing an aluminium "shim" made to improve the fit.

 

[muleystalker]

Put it in the freezer for a day and then pull it out and see if you can pop any of it out. If not try a heat gun