John,
Bite the bullet, grasp the nettle, take a deep breath and buy the cheapest ( which is a relative term with Felcos ) pair of Felco C16s you can find.
They will do everything you want and will outlast you. You will spend no better money.
If that is too much, then a cheap 4" or 5 " mains power angle grinder, or a cordless version thereof, fitted with the German PFERD brand cut-off discs ( Part number SG-Elastic EHT125 { EHT 100 for 4" } .1,0 A 60 R SG-INOX - find them on the young persons interweb and EvilBay ) will do the job and many others besides.
Regards,
Joe.
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