Tools, Sharpening and Power Machinery - Recondittioning old log cabin

I am reconditioning the logs (interior) in an old log cabin. There is all kinds of build up on the logs that needs to be removed. It's hard to tell what all is on the logs, but it needs to be scraped off for restaining, urethaning & chinking. There is shellac (?) in some places, grime build up in others, and other places appear to have had a chemical stripper applied which was never removed. I have been hand planing, hand chiseling, belt sanding, and orbital sanding the logs. Can anyone suggest a tool that might make the job go a little easier?

A large paint scraper might help.

If you are intending to renew the surface of the logs to apply a semi-transparent stain you will have to remove quite a bit of wood to have the finish appear even.

As far as a tool for making the job go easier all I can think of is a high output pressure washer.
Problem is the inside of your cabin would be a little damp to say the least.

I'm going to copy this to the woodworking forum where our expert wood guys reside.