Rail Bender

I need a railbender. Would appreciate suggestions on which to buy and where to buy. Searched Google and have come up empty. Thanks in advance.

I am a machinist by trade and made my own, but I understand by the posts that Aristo,s rail bender works very well.

I use a Llagas Creek railbender as it was availible at my local hobby shop. It works fine, but occationally it starts to come up (the middle piece) when I’m using the power drill adapter. But it only does that on occation and you can run it just fine the other way. It works well for me.