Flex arm

[Steve PaveyParticipant @stevepavey65865]

I have been searching for a thread about the flex arm bench mounted drilling spindle, but failed to find anything. Has anyone had a go at making their own? I seem to remember a post (possibly by JS) about it, maybe 6 months ago.

[Steve PaveyParticipant @stevepavey65865]

[John Stevenson 1Participant @johnstevenson1]

Looking at some old posts over on HSM and I built my original tapping arm in May 2007 but the pics are missing { old ntlworld address ]

But I did update this in April 2015 from air to electric so I didn't have to run a compressor for just a couple of holes.

As it is at present.

As it used to be.

[Steve PaveyParticipant @stevepavey65865]

Thanks John, very useful. What's on the business end of the motor – is it a tapping head?

[John Stevenson 1Participant @johnstevenson1]

The black bit with the handle on it is a cannibalised Machine Mart 1/2" air drill epicyclic gearbox for the reduction which then drives a spring loaded quick release chuck for the original tapping chucks that fitted the air head.

I didn't want to cut the air head up in case it all didn't work. Each size tapping chuck has an adjustable clutch unit built in so you can set it to suit the tap in question.

I did buy a very cheap Chinese set of tapping chucks to use but when I got them they don't have a clutch fitted but are direct drive. However the drive holder was the same so I was able to use this.

I'll probably ebay the original air tapping head as they are quite expensive.

[Author]

Posts