Long ago, Walthers made interior kits that could be use in Athearn cars. ... The parts are a combination of small milled wood parts and metal castings.
I have one for a diner that I still plan to use some day. The label says "933-950 MDC/ATH Diner Interior.", and it could be used for either an Athearn Diner or an AHM diner. The metal castings are chairs. Tables would are to be made from the wood pieces.
You can search on Ebay to find diner interiors that might work for you.
The last diner I built was from another HO kit company. I made table tops from evergreen plastic. I made little rectangle pieces and glued them just beneath the windows. The white plastic looks like tables with white table cloths on them. To better secure them to the walls, I included some bracing against the wall and under the table.
GARRY
HEARTLAND DIVISION, CB&Q RR
EVERYWHERE LOST; WE HUSTLE OUR CABOOSE FOR YOU
i just acquired an Athearn heavyweight 70 foot diner car kit and want to build an interior kit for it? the problem is that there is no specific interior kit for the diner. Does anyone know if i could use say a palace car company athearn lightweight diner interior kit to use in my athearn heavyweight diner? anyone built a interior for the athearn 70 foot heavyweight diner?