You don't build tanks,or machine guns, or fighter aircraft, or submarines with slave labor. For that you need skilled labor. I didn't say that there was no slave labor, just that Germany didn't need it and didn't profit from it.
Your original statement that elicited my response was, "It's pure bullshit that Germany had any need for, or profited from slave labor. In fact, most of the "smokestack barons" turned down Nazi offers of slave labor. This guy lives in some twisted version of Disney's fantasy land."
However, from the link I posted, there is reason to believe that Germany did "need slave labor." And a good percent of the Holocaust victims found themselves being used as slave labor before they got downsized in the crematoriums (after they were worked to death).
Considering the question of Nazi slave labor is accepted by so many people, I find it odd that you are taking the position you are taking? There just weren't enough Germans to build a technologically advanced war machine, and do all the skut work that is always needed in a society. Slave labor solves that problem, if the country has a population that is not that large.
P.S. The very well known sign over the entrance of Auschwitz, "Arbeit Mach Frei" (Work Makes You Free) is quite self-explanatory, in that Auschwitz was a slave labor factory, and the sign was to fool the new arrivals that they were going to be utilized, as opposed to eventually go up in smoke. One should remember that there were SS officers that stood where the new arrivals came, to sort them into those for immediate death, or just worked to death.