Phil and that can take as long as you are prepared to spend, I restored on that had sat on a compost heap for 20 years, but repairing the corrosion ended up taking months, but it was the fact that it was this blokes fathers mower that he wanted as much of it be kept original. Only thing I ended up replacing was the blade carrier and the blades. Looked stunning when it was finished. I put a pic of it on here somewhere but I have no idea where it ended up.