Removing Old OnePieceCranks (IMPOSSIBLE)

[SicMX]

I have recently salvaged two very old finnish bikes and the plan is to strip them of all parts, remove the paint and rebuild with some new parts.

I have been able to remove all parts except the OPC (One Piece Cranks) as the lock ring is badly designed and needs some special tool to be removed.

I have attached two pictures of the lock ring that needs to be removed:

[attachment=1113]

[attachment=1114]

There are two holes opposite each other (only one can be seen in the picture).

Any advice on how to unscrew this lock ring would be greatly appreciated, because i need to remove the cranks before i strip the paint off the frame.

Thanks!
//Andy