This is my experience of B Plates:
Put the die between the plates - you can see why the plates bend!
I only use Cuttlebug, Nestabilities, Nellie Snellen and Joy Craft dies, I have no experience of other makes. I have found that it is the CB dies that do the bending of plates. You get your machine with the freebies and, of course, want to use them - Straight away bendy plates! This is just what happened to me when my machine arrived!! My reaction to this was to turn the plates and although I'm advise I shouldn't, I did and my plates are 3 years old. I leave you to make your own conclusion as to which method you use.
I will mention one other thing about die cutting - sandwiches. I have covered this matter previously and you will find all the info by looking in the labels section on my sidebar. However, when you become familiar with a machine, you find that you give little thought to the sandwich - you just know how to do it! Today I was watching C&C and their pick of the week is Spellbinder dies and when Sheena Douglas used the sandwich slightly differently to me.
She used: A/C/die cut face up/ card/ B. I can see the advantage in this way because when you want to emboss the die you have only have to slide the C plate away. However, using this sandwich you are not sure where your die is cutting unless you use tape to fasten it in place!
I use: A/B/cardstock/die cut face down/C. This way I can see where I'm placing my die, but when embossing I have turn my die over.
For die cutting both sandwiches work, each way has it advantage and disadvantage - it's down to what suit you best.
Please leave me a comment if you would like to add your views. In the meantime - have a good die cutting day!
NB: Chrissie said: "When I first got my Bug I found that the 6x2 dies bent in the machine, but then I read that the dies should be placed cut side up and they don't bend AT ALL!
I find it really useful using them this way too, as when using the Alpha dies as I don't cut out a whole plate at once, just the letters I need. SO I can see where I'm placing the DST covered pieces of card for each letter.
Like you I have B plates for cutting and B plates for embossing. The cutting ones are really banged up but work nevertheless. As you so rightly mention I always use my C plate to cut when using Nesties etc. which stays absolutely flat, but is of course VERY marked. When it gets too bad I'll replace it. After all they wouldn't sell replacements if they were meant to last for ever!"
ikki: I have now tried this way of cutting alphabet dies, AND IT WORKS WELL, and the DST does not stick to the die as it does the other way round! As for the dies, my are bent I wonder if they will straighten. Good advice Chrissie, thanks.