I am working on installing quarter round and can't figure out why my inside corners are looking like this. The joint is tight but the coped 45 piece never meets with the back end of the butt joint. Should the very top of the cope be at the back end of the other trim piece or will it always be like this and not go all the way to the back of the other trim piece?
I think I figured it out after many trials and changing the angle I was coping the trim at. Attached is a picture of what I kept getting where the joint was not going all the way back. I realized that when I got towards the bottom of the trim piece when I was coping it, I wasn't back cutting it enough at the bottom, my cut was getting almost vertocle only. When I changed that angle at the bottom of the back cut, I now have the coped joint all the way to the back of the other joint.
For small quarter round consider using a Dremel with the sanding drum.
First cut a 45 on the piece to be coped, then sand along the cut line at 90° to the long edge of the molding.
Once the material is removed angle slightly to do a back cut.
I cope w/Bosch barrell grip jigsaw an their scroll blades. Not for stain grade but fine for paint. An/or I'll cut inside corners on a 44- degree, outside on a 46
Use some Timber mate wood putty in there. leave it for 20 minutes, wipe of the excess with a wet cloth, paint over it and no worries!
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