Greetings,Our company purchased this product when we found out the cost to have a small board assembled was on par - and actually exceeded - the cost of the board. We needed to solder a part which had several 0.725 mm x 0.522 mm (~ 0.029" x 0.021") pads to the board. The pads were on the bottom of the part, i.e., not visible. Challenging, to say the least. We were able to accomplish this successfully *without* a paste mask and without a pick-and-place (we're not necessarily advocating this - just full disclosure). As is said "....your mileage may vary."There were several other blurbs on the web about a foul smell being emitted from the oven on the first few times the oven is used due to masking tape (??!!!) being used internally. The suggested remedy was to replace the *all* of the masking tape with heat-resistant/proof Kapton tape (a bit pricey, but in this application well worth the costs), which we did *BEFORE* our initial use. We also reworked the ground connection, which really wasn't much of a connection due to the attachment point being covered in paint (an insulator) by sanding/scraping a small area under the nut/washer area down to bare metal. Again, this was done *BEFORE* even plugging in the oven. We placed our assemblies to be soldered on a scrap piece of FR-4 before initiating the soldering operation. So far, even with the above-mentioned small pad dimensions, we have a 100% success rate.We can not vouch for the temperature accuracy as we never measured temperatures. Also, due to the small size of our part there was no doubt that heat distribution would be uniform over the area being soldered.I have no comment on the quality control of the manufacturer in terms of unit-to-unit consistency; I can say that we are pleased with the performance of the oven in our application.JimRespireDX/Amalfi Acoustics, LLC