JB Weld is not welding. It is not heat either. You're now at a point where you're going to weld a bolt head on and force it out, drill it out and source a new steering wheel, or take a cold chisel and a BFH and try to hammer it CCW to get it to back out.

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Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

JB weld has no shear strength to speak of.

The only way that wheel is coming off now is if you either thermally weld a fastener to the bolt head that you can subsequently apply torque, or drill the existing bolt out.

I had to leave a pristine leather steering wheel in the JY because someone prior had stripped out the Allen bolt head.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech