Dunno if anyone has bothered to make their own guidescope rings before but it's about as simple as it gets (not much cheaper than bought ones though).
I picked up a Tasco refractor for $10 (score!) during the week and being the impatient overgrown child that I am I decided to make some rather than wait for them to get shipped.
The Tasco has an outside daimeter of 63mm so I started with some 100mm PVC drain pipe fittings...
http://i381.photobucket.com/albums/o...R/IMG_2567.jpg
1/4 UNC Countersunk screws to go into the existing dovetail holes in my EQ5 and some long (too long
) M5 bolts for the adjusters.
http://i381.photobucket.com/albums/o...IMG_2568-1.jpg
As someone has borrowed my Tap set and not returned it I found a drill bit slightly smaller than the bolt shank and drilled 3 evenly spaced holes for the adjustment bolts and one central hole for the mount. I did this by eye because this is just the prototype, the next one I'll measure it properly.
http://i381.photobucket.com/albums/o...R/IMG_2570.jpg
http://i381.photobucket.com/albums/o...IMG_2569-1.jpg
It's easy enough to wind the screws through the PVC without tapping the hole first...
http://i381.photobucket.com/albums/o...R/IMG_2571.jpg
I know those bolts are too long, I bought the longest ones in the shop for the prototype, the final version will look much neater. As a finishing touch I added some dome nuts to the bolts to protect the tube from the threads.
http://i381.photobucket.com/albums/o...R/IMG_2573.jpg
Done!
http://i381.photobucket.com/albums/o...R/IMG_2574.jpg
http://i381.photobucket.com/albums/o...IMG_2577-1.jpg
It probably took me less than an hour to finish both.
