Any problems scarifieing hard seeds?

If you are one of us who has problems these days with fiddly things, I've found something that helps with scarifying some types of seeds. My problem was skewering or cutting myself while trying to make a small nick in them, or digging too far in to the seed out of clumsiness. 

The item is part of a clock menders tool kit called a "clock maker's broach" and it is held in a "pin vice". It's original purpose is for making very small holes in brass sheeting. You can adjust the length, tightening it up as you do with a conventional chuck-keyless drill. You use it by gently twisting the handle with your hand. The broaches come in a verity of widths too - so you can adapt to purpose. Both components are cheap to buy second hand on ebay. The second hand ones are better quality.

I saw my husband using one on his clocks, and tried it first on camellia seeds. I'm now trying it on smaller seeds. As long as the seed isn't so small that it disappears down the neck that grips the broach, it works very well.