Build your own prop balancer and it works better than the durlbro and topflight
materials
1 1/2" x 1/2" wood your choice visit lowes or home depot
2 1/2 x 3/4" wood your choice
1/8" piano rod -- for 1/8 size props
great planes finger tip prop balancer --- all other prop sizes
4--1/2" round high power thin magnets they are silver and can be found at hobby lobby or michaels or ebay "rare earth magnets" what ever you want to call them there very strong little suckers
1"x1" piece of lexan or cut a piece off a plastic battery package

tools I used dremal with router attachment and cut off wheel, drill with 1/2" bit tape measure, saw,2 part epoxy,sand paper, and a bench grinder

Ill start with the posts, cut two pieces of 1 1/2 wood 4" long squaire them up and make sure there the same size, next drill a 1/2" hole at the top of each piece about 7/16" down from the top, easy way to do this is clamp both pieces together and drill straight through both pieces so there in the same spot on each one.Next take two magnets stuck togather and epoxy them in the hole flush on one side try not to get epoxy on the face of the magnet it needs to be smooth, repeat on the other post, reason for two magnets per side is it doubles the magnets power that part is done..

Next cut the bottom aprox 4 1/4" long out of the 2 1/2"x3/4" wood on the top router two slots for your posts to sit in about half way through the base, first you need to measure the finger tip balancer to get your distance to set the posts at add 1/8" to the balancer length that way one end of the balancer is on the magnet and the other is free floating. On the bottom take your router and make two slots about 1/8" deep and a little longer than you balancer rod and drill two 1/2" holes between them for the two balancer cones deep enough to set the cones about flush.

Next take your piano rod cut it the same lenght as the rod in the finger tip balancer rod, make sure it is straight!!!! very important!!! put the piece you just cut in your drill and take it to the grinder lightly grind both ends to a point with your drill going the entire time your grinding that way your point will come out even with no flat spots It will be a little ruff so again with drill going sand the points with 220g and move up to about 800g to make it smooth as possible when your done the ends will look almost chrome.

I place the lexan piece over one magnet held on with a little oil it gives the magnet a very smooth surface for the balancing rod to spin on the other end of the rod should be aprox. 1/32" or so away from the other magnet
Your done stain it paint it whatever you like when your done with it put your rods and cones in the bottom of the base and rubber band it all togather toss it in your field box and go!

Hope this helps someone out the above instructions are not set in stone you can modify or change things anyway you like shoot use oak and stain it cut the wood fancy to give it a custom look just make sure the magnets are directly across from each other!!