A patent application that has been submitted but not published will not be publicly available through the USPTO website, Google Patent Search, or anywhere else. It is possible that his application has been submitted and is pending examination, but has not yet been published. If true, this brings good and bad news:
The bad news is that you have no way to access his patent application.
The good news is that it's possible to submit a protest against this pending patent application, as described in MPEP 1901. Note that protests may only be submitted prior to the patent application being published, which might leave you wondering, "How am I supposed to know that a bogus patent application exists if it hasn't been published yet?" Good question! If you see a logical inconsistency here, then you probably understand the rule.
In the chapter linked above, it is stated:
If the protestor is unable to specifically identify the application to which the protest is directed, but, nevertheless, believes such an application to be pending, the protest should be directed to the attention of the Office of Petitions (using Mail Stop Petition), along with as much identifying data for the application as possible.
So if you wish, you may submit a protest to the USPTO and include a description of the supposed patent application, the inventor's name, and relevant evidence of prior art.
All this being said, William Steele in his post was clear about only intending to use his patent to restrict commercial use of his invention, and still wishes to make the design available to the DIY/hobbyist community.