In my ignorance I decided to make a mosaic for the garden using some PVC pipe, I learnt a lot along the way!
Both Liquid Nails and the powdered tile adhesive you mix with water seemed to stick the tiles but the ones which fell off later were those stuck with the mixed adhesive.
I’ll never use PVC pipe again because even now I can’t be sure the pieces won’t fall off. Someone did tell me attaching fly-wire to the pipe would have given the adhesive more holding power but they told me that after I’d finished.
The rocks are around the base to deter my dog from scratching her back on the pole, I’m sure it wouldn’t be long before she’d dislodge tiles.
Musings of a Retiring Person 
What a nice idea. Hopefully the dog won’t knock off any tiles. I might try and make something like this for my garden.
If I’d known what I know now I’d have used old clay pipe as the base but if I couldn’t get some of that I’d put the fly-wire around the pipe first. I was given the pipe and did think it was ideal before the problem showed up. Hope you have great success with yours.
What an interesting project! Hope the tiles stick.
Glad you liked it, only time will tell if the tiles stay in place. I feel that as long as I get to enjoy it for a while it will be OK. Thanks for commenting.
Great Idea. I agree that the wire would have given some extra grip for the glue. Hope this lasts as long as possible for you.
Thanks, before I grouted I did do a little test of most tiles to see if they moved but I certainly wasn’t rough.