Beau, AndyT thanks for tech advice. Thanks for encouragement, Custard.
After much thought...
Now that I have stripped it to pine looking colour and got rid of the black spots with Oxalic acid, I would like to get a slightly lighter colour than the Liberon oil gives and as the table was before the strip.
I dont like that aged yellowish tint that my furniture accumulated. So I am not keen on the oils.
I can imagine that the acrylics wouldnt do justice to the Elm, but when wetted with water the Elm chair seats and table top look good. Would they look similar with acrylic when dry? ( I really do feel that out of my depth here)
So the polyurethane would give the Elm more depth and be very durable, sounds like I should do that, but ( i really do feel.......)
I have a blowing vac and a low pressure spray gun which I've never used. God i really shouldnt be doing this..
Just to give you some history about the Ercol purchase. Me and the missus where looking for a chest for kids shoes, spotted a 50's chest bid 35 and got it. But as we where leaving this pile of chairs with a broken arm piled up, caught both of our attention. Mmm not bad...broken easy repair. So I waited and won the bid at 155. Felt a bit ripped off, but the rose coloured glasses transposed the pile of wood as a beautiful dinning service that would make visitors stagger at its fine majestic quality.
As I was loading the car, a couple of dealers standing near by made conversation, "So you like Ercol stuff?". I mumbled "Ercol what ..oh you mean the table and chairs (vaguely remembering the description in the auction catalogue). He said, how much you pay 150? I said yes, feeling redeemed that I paid a sensible price and wasnt the subject of sniggers and uncontrollable tear inducing laughter from the other punters and auction staff. I loaded the rest of the wood/ collectors items into the car with increased pride and drove off feeling fairly sensible and wondered what to do next. What I did was to discover what Ercol was. (There must be a God that looks after the ignorant) Since then I've worried myself silly when bleach would not remove the black spots, only to find out on youtube that "Its a simple job....). Now that I've killed a patch of grass and bleached my jeans in unfashionable patches when stripping. Splashed paint stripper so I had to grope my way back into the house to save my eye sight (twice) I am more determined to overcome any obstacle that comes my way during this, what has become a serious restoration. I just hope that I am able to sit on at the table when finished...
Anyhow, back to my project. Any last advice, please persuade me away from polyurathane. If it is to be poly.. what make do you suggest? Oh just thought it would be nice to have some before and after photos goto go...
Update.
Just been on Manns helpline. They recommend Osmo polyx oil, easy to put on as tough as Polyurethane easier to repair as beau said ... grrrrr head ache comming on..