Machining suppliers for adapters

[Richard136]

Looking for recommendations on how to go about finding a supplier for machining adapters, e.g. for connecting a new focuser to the scope. 

Does anyone have experience of this? The commercial adapters seem quite expensive and I wondered if it'd be cheaper to go direct to a supplier. Also might take some confusion out of the process when ordering online.

[JamesF]

If you can produce a reasonable drawing of what you want then it might be worth looking for a local machine shop who can make it, or perhaps seeing if there's a local model engineering club where someone might care to do it for the cost of the materials and a few beer vouchers.  Or get in touch with Chesterfield Astronomy Society to see if they can help out?

James

[johninderby]

Telescope Express makes adapters to order but not exactly cheap. ££££. Commercial machine shops do charge an arm and a leg.

If you can find a model engineer that might be a lot cheaper. 

[Frank the Troll]

I need someone to make an adapter to fit a standard SW focuser to an old 125 frac

 

[Starlight 1]

If you can come up with a drawing I can see what it like  in the way of size on the plan as well.

1 hour ago, JamesF said:

reasonable drawing

 

[JamesF]

20 minutes ago, Frank the Troll said:

I need someone to make an adapter to fit a standard SW focuser to an old 125 frac

Do you just need a spacer to sleeve the focuser out to fit the 125mm tube?

James

[johnturley]

2 hours ago, Richard136 said:

Looking for recommendations on how to go about finding a supplier for machining adapters, e.g. for connecting a new focuser to the scope. 

Does anyone have experience of this? The commercial adapters seem quite expensive and I wondered if it'd be cheaper to go direct to a supplier. Also might take some confusion out of the process when ordering online.

Try RCM Engineering in Dronfield (Tel: 01246 292344 and ask for Pete), they've machined a few parts for me.

John 

[Frank the Troll]

11 hours ago, JamesF said:

Do you just need a spacer to sleeve the focuser out to fit the 125mm tube?

James

This is whats needed,Its the complete flange tube is ID 125 OD127

Edited January 29, 2020 by Frank the Troll

[JamesF]

5 hours ago, Frank the Troll said:

This is whats needed tube is ID 125 OD127

Hmmm.  Years back I made this which includes a 50mm thread on one side, cut by turning the lathe by hand:

To join a standard SCT focuser to the etalon of my PST:

I think 127mm is too large a diameter for my lathe through.  It will clear the bed, but I'm fairly sure I can't get a cutting tool to the outside of anything more than about 110mm diameter (or if it's possible, I failed to work out how).  I'll check later.

James

[Jkulin]

John at Jtech Design (he does a lot for FLO) is currently making me a couple of adapters john@jtechdesign.co.uk sorry not got a phone number

[johninderby]

Had an adapter made by Telescope Express to fit my new 1.25” Crayford to the SCT thread on my Bresser 127 mak. Bit expensive but since I bought the focuser from them it was easier to have them do it and it is a perfect fit.

 

Edited January 29, 2020 by johninderby