Source for spikes?

There's always ebay.

Acman3,

:-) Lol

You have to think out of the box, the pointy end goes in the opposite direction you'd otherwise use these :-)

Good Listening

Peter

If we stick with using them the normal way, we could call it the Hilti mod, and charge a LOT of money.

Acman3, you'r on to something here :-)

On the other hand, the studs are very inexpensive and works incredibly well, they never dull or bend at the point. When using 4 or more spikes they are infinitely adjustable so that you can get a solid foundation and you'd of course use these with a jam nut so that they lock in place once adjusted.

All this for less than $1each, including the Insert, washer and jam nut.

Good Listening

Peter