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Old 07-03-2021, 08:15 PM
AstroApprentice (Jason)
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Location: Melbourne, Australia
Posts: 318
First DIY mount adapter

I thought I would share my first foray into making a mount adapter.
A couple of weeks ago I found myself without the tripod for my mount and unable to take advantage of a couple of cloudless nights. I had an old
Losmandy tripod available, but no means of adapting my mount to it.
So when I returned home, I figured I would have a go at making an adapter to avoid such frustration in the future. I bought an aluminium disc on eBay and set to work despite not having any metal working tools except a tap & die set from Bunnings. Fortunately I have a drill press and a router table with a down cut spiral bit that I had used for aluminium at slow speeds on a previous diy adventure.
Anyhow, the adapter came out surprisingly well and given my imaging setup is not very heavy, Iím confident itís capable of holding the load. I even made a crude version of a captive nut to hold the centre bolt and found a threaded collar to use as the azimuth pin. Given how oversized the tripod is, I expect it to be nice and stable.
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Old 07-03-2021, 09:17 PM
PaulSthcoast (Paul)
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PaulSthcoast is offline
Join Date: Feb 2019
Location: Ulladulla NSW
Posts: 118
Nice work Jason !!

I often find myself with projects and then needing
to figure ways of bringing them to reality.

What is the saying ?

Necessity is the Mother of invention ?

and if course.......my mind wanders to Frank Zappa.....

.....any hoos..............

Looks great, again, well done.

Mind if I PM in regards to the ebay link ?

I am not sure if it against the site rules to post it ?

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Old 08-03-2021, 10:12 AM

JA is offline
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 1,946
Excellent job Jason
Great considering you didn't have a lathe. Maybe you have a rotating stage/base on your drill press or templates or ...?

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Old 08-03-2021, 12:31 PM
AstroApprentice (Jason)
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Join Date: Dec 2015
Location: Melbourne, Australia
Posts: 318
Thanks Paul & JA,
For the outer tripod rim, I just set a gap in my router table fence to match the curve of the Al disc with it just touching the bit and rotated it slowly by hand, setting the fence back 0.5 mm each full rotation until I had undercut enough for the disc to slot into the tripod top. It was slow going, but I wanted to be cautious.
For the inner mount recess, I used a cheap $10 eBay Forstner bit on my drill press - I assumed it would be dull in minutes, but it worked remarkably well and still seems OK - again I went slowly with plenty of cutting oil as I didn’t want to damage my drill press...or me!
I dream of a metal lathe, but I just don’t have the room for it - plus i doubt it would get much use compared to my wood tools.

Last edited by AstroApprentice; 08-03-2021 at 01:10 PM.
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Old 09-03-2021, 01:31 PM
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RyanJones is offline
Join Date: Jun 2018
Location: Melbourne,Australia
Posts: 1,208
A fantastic effort Jason. Well done !
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