There are several models of 12x36 lathes and both HF and Enco have carried identical models at times, HF does not even sell a 12x36 anymore. As far as HF, Enco and some others having identical models this is a well known fact and going to the Yahoo group for these lathes will shed a lot of light on why they are the same, yours very well could have been very different than the one you saw at HF but even other Enco models can be different. HF shop machinery is not the same as the junk they sell in the stores and is imported from the same factories as the Enco, Birmingham, etc and they are the same as long as they are the same basic models. An example is the 14x40 I mentioned,
Except for the color this is the same machine,
as this one
The prices are much the same anymore and the Enco in the link is priced with a lot of accessories and a DRO otherwise it is the same machine as the HF and the YCL1440. That is also the HF model that had the Birmingham manual with it for a while. These are good machines and well built for a Chinese import but they are not the quality of old American or European iron if a good domestic lathe can be found. However just as in the case of that popular 9x20 these particular models are the same whether from HF or Enco but with HF's pricing being nearly the same as Enco it would make little sense to buy from HF with their lack of after-sale support. The Birmingham certainly has a much prettier paint job and they have absolutely excellent customer support while the Enco and HF machines are plain looking and the HF outfit has next to no customer support otherwise they are the same basic machine.