@tej 
There is a site in Portugal that sells individual Hosco nut files and there is a .009”” one at €19.50. Still pricey but none of these tools are cheap.
https://guitarsandwoods.com/index.php?route=product/search&search=Hosco&sub_category=true&description=true

@boo
When you move find a house with a workshop space.

@boo
Great humour here and I love the poetic license which is what you would expect from a journalist, twisting the truth a bit to make a good story.

@tej I can’t remember my previous comment but you have thrown me a bit as I always work in mm, however I’ve got my head around inches after some thinking. The set I use is 0.4, 0.6, 0.8 and 1.0 mm….   Read more»

That gives me a better working height

I’ve been using a Blacker and Decker workbench since 1982 and bought a second one a few years ago in a sale but I do find I get back pain now so I tend to work standing up using a…   Read more»

@seanf
If you have any repairs to your old guitar other than fretting, which is covered in Marks course, post them on the forum first and you can get a few opinions on the best way to proceed.