Secondary spider parts needed

[Stu]

I am try to fit a secondary support from a Revelation dob to another scope (to be revealed  ) and it is a little too small so I am looking for ways of extending the arms but 2 to 3 cm (need to check and measure that though)

Is there a decent place, preferably within the UK to source suitable hardware from? I will need to post a picture up I know and will do that tonight so it is more obvious what I need.

Any ideas in the meantime appreciated.

[Dr_Ju_ju]

1st thoughts would be to cut, bend & paint some thin sheet steel, to match the existing support arms, but longer.

Or then there's Astroboot http://www.astroboot.co.uk/AstroBoot

[JohnSadlerAstro]

Hi,

I don't know how expensive the Atlantic voyage would be if you bought  from here, but it looks about right:

https://www.astrosystems.biz/spiders.htm

Personally, (and if I had the tools) I would see if I could get some sheet, then make some curved vanes to reduce star spikes at the same time as getting the secondary to fit.

John

[johninderby]

Not the cheapest solution but TS does a range of spiders. The cheaper range down the page are €45.00 to €65.00.

https://www.teleskop-express.de/shop/advanced_search_result.php?keywords=Spider&suchdas=OK

BTW the problem with curved vanes is that unless absolutely perfectly shaped they can cause problems and are expensive to make properly which is why commercial newts have straight vanes. 

[Rob]

I'd be tempted to make them?!. You can grab materials from ebay and fashion them up for the job.

Best Rob

[Chriske]

4 hours ago, Dr_Ju_ju said:

1st thoughts would be to cut, bend & paint some thin sheet steel, to match the existing support arms, but longer.

I'd do that too..
You could make curved spiders while you're at it.

[PeterW]

I’d use some long thin bolts to do the extension as it doesn’t sound too far. There seem to be a lot of options available in the spider market... quite confusing! I once got a very robust looking one from Gary Wolanski  in Canada.

PEter