Dow Chemical had a publication 30 years ago that gave the details of about 1/2 a dozen paint stripper formulations.
I had a copy but cant find it.
They were based on methylene chloride~ it will get the devil out of hell!
If you can get your hands on the publication, it was not in general release ~ only to paint co's etc, you could make your own brew.
The alternate is hot caustic, it will bleach the timber as well.
Good Luck !

__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving