[time-nuts] Machining some aluminum help!
pete at petelancashire.com
Thu May 18 13:18:54 EDT 2017
Price sounds reasonable to me.
Tapping 40 each 4-40's that deep in to a closed hole is the killer. If I
still had my old Bridgeport J and was NC'ed Your looking at say 1 hour to
program, 10 minutes to mount in a vice and get aligned, drill 40 each #44
or #43 holes would be easy, but then slow things down, cross fingers and
Doing it by hand, at 1/2 deep those holes better be close to "perfectly"
On Thu, May 18, 2017 at 9:54 AM, <cdelect at juno.com> wrote:
> I have a square aluminum tube 5" X 5" with a .25" wall it's 8 1/2" long.
> I need 20 holes in each end tapped for 4/40 and 1/2" deep.
> This is for a Rubidium project.
> The local machine shop want's $360.00!!!!
> Anyone have a machining setup that could do the work a bit cheaper?
> If not I'll give it a try myself.
> Please contact me off list.
> Corby Dawson
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