After cutting a few tubes I found a post on a forum that advised you can actually force the knurled bit of an inner tube core off using pliers and then push the core all the way back into the tube and just dump sealant in.
Then push core back into place and wind the knurled end back into place.
After cutting a few tubes I found a post on a forum that advised you can actually force the knurled bit of an inner tube core off using pliers and then push the core all the way back into the tube and just dump sealant in.
Then push core back into place and wind the knurled end back into place.