We were talking earlier in this thread about the glue deforming body tubes around the motor mount rings.
Thought I'd share a photo showing this glue Draw with another adhesive in another of the area this damage can occur.
I'm working on a replacement sustainer for my Old Estes Delta Star 2-star payload model. using as many of the original parts as I could slavage. In this pic it clearly shows the Tube Draw in the payload section where I used a very heavy fillet of ambroid to help fill in some of the irregular surfaces of a re-used balsa nose block.
Instead Of leaving the Nose cone off the payload section while the glue dried I stupidly popped it in place before I closed up the workshop for the night. You can see the results in this close-up, which will now need to be filled and sanded smooth.
In this case this draw could have been completely prevented by simply leaving the nose off. With Motor mounts a couple small holes in the rear centering ring is usually enough to prevent this type of suction draw
Hopefully this helps illistrate it isn't the glue type but the suction created as the glue or adhesives use the oxygen inside the sealed portion of the tube during drying
Hope this helps.
Thought I'd share a photo showing this glue Draw with another adhesive in another of the area this damage can occur.
I'm working on a replacement sustainer for my Old Estes Delta Star 2-star payload model. using as many of the original parts as I could slavage. In this pic it clearly shows the Tube Draw in the payload section where I used a very heavy fillet of ambroid to help fill in some of the irregular surfaces of a re-used balsa nose block.
Instead Of leaving the Nose cone off the payload section while the glue dried I stupidly popped it in place before I closed up the workshop for the night. You can see the results in this close-up, which will now need to be filled and sanded smooth.
In this case this draw could have been completely prevented by simply leaving the nose off. With Motor mounts a couple small holes in the rear centering ring is usually enough to prevent this type of suction draw
Hopefully this helps illistrate it isn't the glue type but the suction created as the glue or adhesives use the oxygen inside the sealed portion of the tube during drying
Hope this helps.