Looks like there may be more room for forward arm movement with this chest peace which is my only beef with the Mark IV armor.So I found out that the issue I was having was caused by a line in my G-code that was not recognized by my printer. It is now working as it should and I was able to finish printing the chest plate. until I get some epoxy and spot putty, I'm just using hot glue to hold it together. since the side pieces and ab piece make up the whole chest plate it's difficult to tell exactly how big it will be with just the main plating but it will be considerably larger than the old armor.
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