Lin, Thanks for responding in such a positive and helpful fashion. This is the kind of feedback that we need to improve things. take care, ...

Thanks, Guys. Happy holidays. BTW: I sold 10,000 damascus blades as a result of that article. Sorry, that was a dream I had. Nevermind! I d...

Hello Ed, I have been using didydium like safety glasses for about twelve years. Every four to six years they get so pitted or scratched from fo...

Joe, You are about to engage in some considerable cost for a dewar that large. Nitrogen is not all that expensive but the dewar can be. My ques...