"I was reading a magazine and saw plans for a vertical sander made out of wood. I thought that looked like a good challenge so I started on it," he said.
With help from fellow sheddie John Harvey and encouragement from Progressive Engineering the sander rapidly took shape, and this week all that remained was fitting a second-hand electric motor and belt drive.
"It's probably cost me as much as a commercial one, but this is more interesting, seeing I've made it myself," he said. "I had my doubts, but I'm glad it worked," said Mr Tryselaar.
Where to from here? "Well, I like to do a job for myself and then a job for the community," he said. "And then I'll give some thought to what's next."