[caption id="attachment_235" align="aligncenter" width="625"] Tray stand version IV[/caption] This was a design improvement we liked so it was time to make another prototype. Now we were getting somewhere! Next was the material usage which was a bit high, i.e., the width of the ply could be skinned down to save in weight height and material usage. Only when version II (see design) was finish was it clear that there were mechanical and structural weaknesses on one side. This was solved by adding an additional cross brace in version IV. [caption id="attachment_259" align="aligncenter" width="625"] Tray stand version IV[/caption] Version IV was tall approximately 33". Thinking a little about how portable the tray stand might be, could it fit inside the tray? See version V.