Re: [ATM] Installing Threaded Inserts

[Bill Prewitt <bprewitt@neo.rr.com>]

They really don't want to fit - you have to use great force, but it must 
be controlled force.

I use serious leverage... find a span wide enough between two pillars or 
beams to fit the length of a truss pole plus about six inches.

Thread a bolt through a 2x4 so about 1/2 inch of thread protrudes from 
one face. Secure it to one pillar and screw one of the umbrellas to it, 
small side out.

Place the truss pole over the umbrella and use a 6 foot 2x4 plus 
whatever shim blocks you need to press against the pole from the far end 
without deforming the pole.

Slowly press-fit the pole over the umbrella, adjusting the 
umbrella-holder or whacking as needed with a rubber mallet if it starts 
going crooked.

Lather, rinse, repeat.

This has worked for 4 scopes so far, with 1" and 1 1/4" tubing.
Be sure you have the length right before you do this, or at least be 
able to trim the other end.... those suckers ain't coming outa there !

        Bill


Samuel DiRocco wrote:
> I think we are talking about 2 different things. The inserts I have go into
> the aluminum truss poles. They are an extremely tight fit and seem to want
> to go in crooked.
> 
> --> Sam D
> 
>>I just drill the wood to be a snug fit for the insert, push the
>>insert into the hole until it touches the locking prongs, thread
>>a bolt with washer into the insert from the side opposite the prongs,
>>and tighten the bolt until the prongs are pulled into the wood with
>>the flange snug up against the wood. Note that the bolt is used in this same
>>direction to attach stuff to the wood.
>>
>>If the wood is hard (oak, maple etc) it helps to predrill the
>>location of the prongs, somewhat smaller dia than the size of the
>>prongs.
>>
>>
>>Andy Saulietis
>>ISS Enterprises
>>10 Milky Way
>>Mayhill NM 88339
>>
>>
> 
> 
> 
> 
> http://firstlight.mvobservatory.com/
> 
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