Originally Posted by spaceworm

Having an engine I could not start with my Sullivan 12 volt starter, I made an adapter for my 18 volt portable drill this way. I bought an insert from my LHS. I took a hole saw the size that the insert would fit in snugly. I used the mandrel that came with the set of hole saws that has a key to keep the saw from turning. I removed the pilot drill by loosening the set screw. At first I used the hole saw with the teeth still on to prove the concept. After it worked so well, I ground the teeth off. Works great!!! I have also used it in a 3/8 inch corded drill, since we have 110vac in our pits. It has started 35cc and up gassers. I got the hole saw set from Harbor Freight on sale really cheap.

Sincerely, Richard