Counterbore from offset angled plane

f_g744

I have a 2"x4" section of some length where one side (face) is cut off at a 38 deg angle along the length.  Along that face I have several thru holes and I want to add a counterbore on the adjacent face which is at 38 degrees.  I was struggling to achieve that using an offset plane, just could not get it to work.
Any advice or tips to help with this?
Thank you 

robert_scott_jr_

Whatever face you are working on, the Hole tool will provide that. - Scotty

john_lopez363

@f_g744

Here is one way.  Sketch your hole profiles as usual.  Extrude Remove the thru hole, Through All.  Then do a second Extrude remove of the counter bore hole using a Second End position operator.

john_lopez363

Here is the Holes Sketch for reference.  Obviously your dimension will vary, but the technique applies regardless.

f_g744

Unfortunately I don't get to spend much time using OnShape just do to my job.  
I will give that a shot.  I was getting some funky results using an offset plane, which I suspected was due to my inexperience with the tools.  This seems simple enough.
Thank you very much.