I have been a CWI for a few years now and I work full time for a good company. I have been contacted by another company to qualify some welders. I have a little machine shop as a side business. I have also made some guided bend test equipment per various codes. My question is: after administering the welding test. Can take them plates back to my shop and cut, prep, bend and evaluate the coupons per code (accept/reject) and write WPQ? Or do I have to send them to a certified test LAB?? These questions also apply to machining and mechanical testing of PQR's. Any information on this would be great. Thank you.