Thanks so much!
I was going to ask you about the fat and the best beef cuts for biltong.
What is spirit vinegar?
Its funny how my new interest in biltong and my woodworking passion dovetail (pun intended) so nicely.
Apparently biltong is very tough and one of the sites I found recommends clamping the finished biltong in a vise and shaving it with a wood plane for easier consumption. This method will work very well after cutting the meat with the grain as you suggest.
I will definitely have more questions for you Snip. You are definitely qualified to answer them.
Could you please post a photo of your box?