When it comes to flat checkering I use a very fine toothed hacksaw - I think it is about 64 teeth per inch - which can be purchased in a hobby store, to deepen the lines. Then just a touch with a 60 degree fine tool to blunt the sharp edges, does a great job and gives checkering about as flat as possible. I like the effect as this style does not hide the wood underneath and yet gives the stock a finished look. As the teeth at the tip dull you can grind the blade to a fresh set and away you go, a lot cheaper than wearing out your checkering tools. The blade can also be used to straighten out a problem line. --- John S.