Because you asked... Renedra bases are half the thickness of gw ones. You mortals are so easy to please.
Thanks Dave! and as you say, very similar to a washer.
Next step is trying to base with poker chips, that has to be the most show-off basing method...
Its what the cool kids are using...I only use real valid poker chips from casinos... makes them the same price as GW ones. ;)