I actually bought my kits from Packardwoods, but same kit...
I bought a bunch and tried them out this past week... they turned out pretty well, but as someone posted on another forum, you do have to watch your measurements... I was 1/8 or so off in two of my blanks... one was too short... could fix that with a little work on the grinder to shorten the stem, the other was too long and it's a toss... I'll remake it and get the dims right. The others all turned out well.
1.an oak burl that I didn't want to loose... I worked the stem down to fit.
2. Bradford Pear
3. Another Oak Burl
4. A Walnut with a little spalting in it...
These three are all silver maple.
These two are from some scrap plywood I had left over after fixing the wife's dinning room chairs... glued up to create the blanks.