I really don't know why modellers waste their money on SAC 'metal' undercarriage sets as the ones I have tried before were simply a soft pewter style metal that bent alarmingly whilst cleaning up and offered no real advantage over the kit parts whatsoever and with actually less detail. Perhaps their non WW1 sets are better than those I tried and junked however having built a number of WNW kits now, the kit parts are perfectly robust and solid enough as the finished kits even in 1/32 are hardly big and heavy anyway. My idea of a metal u/c set that serves a real purpose is the jewel like AMK set for their 1/48 MIG 31 which was a great improvement and investment due to the quality of the metal u/c set itself and the much improved stability in supporting the weight of such a big model. That said - each to their own. Gary

I would like to know if these really are beneficial. I have built only one WNW kit (Se-5) and the undercarriage was not as strong as I would have liked, so there may be a need for metal ones-- if the metal is not soft and bendable.