Skid steer dozer blade

[Rio_Grande]

I have been away from here for some time. I finally got my shop space back and am contemplating building a 4 way dozer blade for my skid steer. They seem priced really high from company痴 like Bradco and grouser. Seemed like it shouldn稚 be too difficult. Has anyone built one?
I have a 200 gallon propane tank at home I could use for the concave, would have to add a cutting edge and bracketry.