I have an opportunity to make some curved outside window trim for some windows with half and quarter round tops. One difficulty is that it's 180 miles away. My brother lives near there, so I asked him to make some careful measurements. There are three half round tops and five quarter round. Here are the measurements I got back (horiz x vert):

Half round: 55 7/8 x 27 3/4, 60 5/8 x 30, 72 1/2 x 36 1/8

Quarter round: two @ 47 7/8 x 47, 40 x 39, 39 7/8 x 37, 40 1/8 x 39

It seems odd to me that H & V radius measurements are so different. The half rounds are closer than the quarter rounds, but none of them match very closely.

Assuming the measurements are correct, what's the best way to deal with this? Can I assume that these are actually round, just less than 90 or 180 degrees? In which case,should I use the long radius dimension? It will be ok if the pieces are a bit long - they can always be trimmed. I just want to avoid major gaps between the trim and the window. I can make trial parts from plywood or something, but I want to get this done with a minimum of fuss.

Thanks,

Denver