Starting to gather up what all I need for putting together a naval carriage for that 1/3rd scale 6 pounder from Gray-Star.  The barrel itself probably won't be here for another couple weeks.  The more I think about it, I would like to put steel tires on the wood wheels.  Problem is that the local machine shops either don't want to mess with such a small order or have a cost prohibitive "minimum charge".  What I need are 4 pieces of seamless tubing or seamless pipe cut 2" long.... 2 at 3" diameter and 2 at 4" diameter.  Or would I be better off doing all 4 at 4" diameter?  The measurements don't have to be exact as I would be turning the wood wheels on a lathe to fit.  If you can supply these, please Private Message me or e-mail to bebloomster@aol.com with what you would charge.  Thanks