As the base kit I used Eduard's boxing of former Tasca M4A1 sprues, as it is my favourite sherman type and a joy to build. It also helps that this type of intermediate M4A1 was a base for many early M50's.
The M50 specific parts were designed by me, at first as an upgrade for late model M50 from MP models, but then it evolved into an idea to be able to make an M50 with virtually any sherman kit that has 75mm turret. For reference I used drawings and photos from dr. Manasherob's Lioness and Lion of the Line vol.2 book.
Parts were printed via shapeways in their frosted ultra detail resin.
3D M50 conversion includes mantlet, bustle extension, gun travel lock, remanufactured loaders hatch, smoke dischargers as well as empty mounts seen on very early photos of M50s, early infantry telephone box and exhaust deflector. Last part may not be exactly suitable for this type of medium as one of my examples got warped, the other one is ok but it is still on its sprue.
There was also some trial and error around the fillets that meet the original leftover bustle and lower edge of the butle conversion and these details I had to redo with Millput.
Bulk of the sherman is built, now I'm adding small details, welds and so on. To complete the build I will use some pe from old Eduard's PE set for italeri M4A1, commander's all-around vision cupola (preferably bought as a sprue from Asuka) and Bronco's T54E1 tracks.
The resin that the conversion was printed in is semi translucent, so untill I shoot it with primer, it is a little hard to photograph, so bear with me please.
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I shaved off al the rivets from the lower hull bottom, but I couldn't be bothered with redoing the reinforcement profiles to the welded style, too much work with visibility on the completed model close to 0.
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Cheers,
Greg