Earlier this week.... a Forestmaster vertical axe (log splitting thingumybob). Install on chopping block, place wood, lift axe/weight, drop, repeat. Managing to split a bunch of old logs that were here when we moved in and which had proved resistant to my bext efforts with a "normal" axe (suspect they were left as the previous owner couldn't split them either). Hopefully it has a level of longevity, only time will tell- looks quite sturdy. It is still something of an upper body work-out, but way more effective for the effort level than a normal axe.
Should take delivery today of some cans of WD-40 specialist- spray grease (for my SGS hammer drill and to coat my vertical chipping axe) and dry lube (for locks).
GC