In Case You Missed It
The Home Machinist
If you need to send a part out to be built by a professional shop, a good drawing, well identified, is essential. The KISS principle applies, and be sure you don't request closer tolerances or more exotic materials than you really need, or it will cost you.
Plastic Tubing No-No
The symptom was a static system that leaked like a sieve when tested. Further...
