Quorn rotating base?

I was idly looking at the castings left to do on my Quorn, when I realised the rotating base casting wasn't there. After a bit of panic, I realised that the remaining unidentified casting was in fact a part of the rotating base and that other bits and pieces were too. So it looked as though this item was fabricated, rather than a single casting.

Opening the Quorn book I saw an addendum at the front which said that this was so. Never saw it before despite constant reference!!

I have some of my own ideas as to how to fabricate said base, although the Quorn book said that the instructions were freely available from MES! Some hope!

I intended to silver solder a block on top of the turned down cylinder of cast material and also silver soldering a fabricated spigot with the 90 degree V already turned on it!

How about loctiting the spigot in place then I don't have to solder two components close together?

Andrew.

Is this any use? **LINK**

[Edit: See the bottom of the page entitled "303/319/320: Rotating base"]

Jon

Edited By Jon Gibbs on 23/06/2017 11:51:44

Andrew Tinsley:

See ME 5 September 1986 where DHC describes the modified rotating base (I can email an extract if you haven't got this issue).

Good luck silver soldering to cast iron

Andrew, can you put some pictures of the parts you have in an album. It's much easier to advise if we can see the items. I fabricated my tilting bracket and rotating base so should be able to advise to some extent.

If you do decide to fabricate it then I would finish machine, add the Vee etc afterwards just incase anything moves while soldering. As KWIL hinted steel will be easier to solder but as can be seen it is possible to solder CI.

Thanks very much indeed for all the input. One of the links indicated that the spigot could be Loctited into position, so that is interesting.

I was a bit surprised at KWIL stating that it was not easy to silver solder cast iron. Not knowing that, I have always been able to silver solder to CI without any problems. I suspect my success is no more to do with me, than it is down to the flux used. My father was a welder and sheet metal worker. I inherited the flux from him and I believe it is / was a BOC product. He always took me to task silver soldering to cast iron, but that was because Sif bronzing was much cheaper!

I will try and work out how to attach pictures, I always fall foul of too high a resolution and I can't remember the free resizing programme that I used to use.

Everyone seems to indicate that I would be better off junking the cast iron chunk. Now wait a minute........ I seem to remember Prof Chaddock remarking in his Quorn book that "it was cast steel and it cut like free cutting mild steel, which in fact it is". Just checked on that and found my memory is correct! So big apologies all around for the duff information.

Thanks everyone for the assistance so far,

Andrew.

FastStone Image Viewer is pretty good, and does far more than just resizing, though you will find that in under Tools - Batch Convert.

Bill

Unless you have very big files the site software will make it fiot the forum page if using an Album here.

If hosting on somethinglike Photobucket then I have it set to automatically resize everything I upload to 640 wide.

How to add photos to your post here