In addition to Jeff's comments, consider reducing the number of segments used for the radius at the front of the foot as well as for the roundover. Six segments will be plenty and you could probably get away with 3 or 4 for the roundover along the edges. If you don't need to radius the top edge of the foot as Jeff did and the large arc doesn't end in a segment that is perpendicular to the top edge, draw a temporary extension to the last segment and include it in the Follow Me path. Follow Me will continue the roundover beyond the part. Select all of it and run Intersect Selected. Then delete the waste. (Think not turning the router off until after the bit has finished the cut.)

As Jeff said, scaling up will help to prevent those tiny faces that SketchUp doesn't like to fill. I find the Tape Measure to be quick and easy for this sort of thing.

http://img.photobucket.com/albums/v506/weekender410/Trestle_Base_Assembly1.jpg

http://img.photobucket.com/albums/v506/weekender410/Trestle_Base_Assemblyhidden1.jpg

Edited to add: As far as using Follow Me goes, try selecting the edges that make up the path before running the tool. I think sometimes that gives you better control and you don't need to be able to see the entire path when you run the tool.

Here I radiused all of the top edges except where it joins to the other component. I drew a radius on the side at the top of the large curve and used Push/Pull to get rid of the waste. The remaining edges were radiused as before with Follow Me.

http://img.photobucket.com/albums/v506/weekender410/Trestle_Base_Assembly1-1.jpg

The above attached designs are good and I think I can also give a try but till then I don't have any suggestion here to give you. I am also very new to this forum and I think slowly-slowly I'll learn how to do things.

"Going High"

Nice table.

A quick look shows that one leg assembly wasn't moved on axis relative to the other one. This is likely the cause of the error. How did you copy the leg assembly and place the copy? Did you use Copy and Paste or the copy function of the Move tool? You should use the Copy function of the Move tool for that sort of thing.

I expect you'll find it easy to build your model in place rather than draw the components separately and move them into position. Building in place will eliminate those sorts of errors. It's also just plain faster.

By the way, the apron boards at the ends of the table are inside out.

table.jpg

table2.jpg