I have dealt with APECS investment castings for several years now. They have in that time always provided me with exceptional service.
The castings they send back are smooth and with minimal growth lines, (which greatly reduces clean up time). I also have had minimal trouble with porosity in the jobs I have received from APECS.
A pleasing feature of their service is their excellent turnaround time. I have the reassurance of knowing that if I have an exceptionally urgent job they will always try their hardest to get it done as fast as possible.
APECS has alleviated the stress associated with the casting process, I have found a reliable and consistent supplier who I am happy to be associated with.