I don't know if this is the right place for this, but a friend of mine's masterpiece grimlock took a tumble the other day and one of its dinosaur arms broke at the middle hinge. How would you guys reccommend fixing it?
You're never going to be able to make it like it was. Best you could manage is to glue it together and lose that elbow articulation. My advice, look for a part or a junker with an intact arm. Found this one on eBay Transformers Masterpiece Grimlock Right Dino Chest Piece | eBay $13 including shipping is not bad at all and it's literally the only spare part I could find for mp Grimlock, so it's lucky that it's exactly what you need - that is his right arm in your photo, right?