I prefer to use cattle panels which are heavy gauge - they're called cattle panels for a reason and you can get one the size of the one in the top pic for $14.00 which is cheap because it's a one time investment and if you really want to, it is possible to cut it. Many in the tomato forum will also tell you how great they are, just search that forum or ask. You have zero doubt as to whether they'll hold and they last forever. I've grown ten pound melons on them and they don't even flinch. And the wire is thin enough that the tendrils grasp on easily, unlike pvc pipe unless the pipe is simply the support to hold up some other type of thinner medium used as a trellis.

This isn't my pic, just examples:

Great examples at the following link:

Here is a link that might be useful: particularly scroll down to Lockheart TX

That said....

This is what you will need.
A plastic shoebox, with a lid. They come in various sizes, any will do.

Soil less potting mix, half peat, half perlite, or whatever is your favorite medium.
A little clay pot, with the drain hole plugged with caulking or silicone. If this is a new pot, scrub it with some steel wool to be sure it doesn't have a sealer on it. You want the water to seep through it.
Rooting hormone powder or liquid, or salix solution from the willow tree.
Plant material, snippers. I am going to pot some Plectranthus (a tall swedish ivy) and a Joseph's Coat, 'Red Thread'. I already have some succulents rooted in this box. I will take them out and pot them up later, DH has a new cacti pot he wants to put them in.
You can see here, I hope, that I fill the clay pot to the top with rain water, well water, or distilled water. I just don't use our tap water, too much chlorine and a ph that is out of sight.

I pour a little of the hormone powder out on a paper plate or a piece of paper, so that I don't contaminate the whole package of powder. And these little 'snippers' are the best for taking this kind of cuttings.

This is about right on the amount of hormone to use. I try to get 2 nodes per cutting, if I can. Knock off the excess. It is better to have a little too little than to have too much.
Then, with your finger, or a pencil, or stick, SOMETHING, poke a hole in the potting mix and insert your cutting. Pull the potting mix up around the cutting good and snug.

When your box is full, and I always like to pretty much fill the box, just put the lid on it, and set it in the shade. You don't ever put this box in the sun. You wind up with boiled cuttings. YUK!

Check the cuttings every few days, and refill the reservoire as needed. Don't let it dry out. If you happen to get too wet, just prop the lid open with a pencil for a little while.
This is a very good method of propagation, but I don't do roses in these. The thorns just make it hard for me, with my big fingers, to pack the box full. All kinds of other things can be done in these. Just try it!

Janie