Bob Hadley
Bob Hadley is the R&D manager for a California-based consumer products company. He holds a Sport Pilot certificate and a Light-Sport Repairman certificate with inspection authorization for his Jabiru J250-SP.
Home Shop Machinist
Conrad Norquist shows how the 6061 tubes supplied with Airdrome Aeroplanes kits are easily bent using wood templatesMechanics from aviation's golden age did...
Parallels, Stops, and Travel Limiters
Although the title might suggest it, this is not about parallel parking, speeding tickets, or driving of any kind.
Chasing the Elusive Thread
Chasing a thread (B) on the lathe involves engaging the feed system to make several passes using the 60-degree thread-form tool (A) until...
In Case You Missed It
Metal Magic: Using Reamers For Accurate Holes
Sometimes a drill bit just won't do. When you want accurate, perfectly round holes...
Ask the DAR
A reader asks if he can use his Experimental/Amateur-Built aircraft for instruction. DAR Mel Asberry’s answer: It’s not a problem, but charging for transition training of a non-owner pilot requires a specific operational exemption.