[quote=“drvnkd,post:6,topic:49388"”]
Its PC Board Layout, Documentation, Assembly, and test.
Then I mate them with the rest of the mechanical parts and test
the units using labview.
It was my old job 
So, its electrical, mechanical, and software related:)
I have to get stuff welded for me too.
I would be happy writing off 50% of a laptop or something.
[/quote]
100% writeoff on a laptop easy with that type of work. I wrote of my Inspiron 6000, a printer, all the ink\paper I used that year, a window AC unit (told my tax guy it was to keep the office where I keep servers running cool) and lots of other stuff only remotely related to my business.
Bottom line, don’t be afraid to get creative, especially if you have a tax guy to bounce ideas off so you stay in the gray area that you can defend on the rare chance you get audited. NY and the feds fuck you extra hard, no lube, on “self employment” income like this. By the time everyone gets paid its almost 50% on profit. So you need to do EVERYTHING you can think of to get that self employment income cut down by expenses and caritable donations because you are taxed on profit, not on net. Not that I would ever condone lying on a tax form, but Amvets generally gives you a blank signed receipt so you can fill out exactly what you dropped off yourself.
Also, look into “depreciated assets”. I’m still not 100% sure how it worked by basically he gave me a worksheet to list every thing in my home office that I didn’t buy when I started consulting but did use. Ex, my desk, lamps, filing cabinets, a couple old servers, a desktop PC, fax machine etc etc. The worksheet listed the new and current value and he did something to use all that stuff as a writeoff as well.