I hope I am not repeating a question, but here is my query.

I am looking for double blank cards. I know where to buy poker sized double blank cards, but was wondering if any of you have any experience with finding other sized cards like bridge sized or miniature sized.

For my purposes, I need playing card like paper as I find it easier to handle, spread, shuffle etc. compared to index cards or other paste boards. In addition I find double blank playing cards to be opaque whereas writing on other materials can bleed though to the other side.

I bought some double blank cards from Amazon (Apostrophe Games Blank Playing Cards (Bridge Size, Aqueous Finish) These were good, but seem a little flimsier than US Playing cards and not air cushion finished.
I bought some other cards from Amazon (Supla 140 Pcs Business Cards Paper Blank - 3.2" X 2" (L X W). These were more like cardboard and do not shuffle of spread well. The cards are not completely opaque and writing on one side can be seen though based on lighting conditions.

You could go to your nearest printer and let you show what they have on cardboard.
Here you find lots of different finishes and in different thickness, they can also order what you need.
And for a little money they cut to the right size and by need round the corners also.
Or you do the cutting and corner rounding for yourself.
Here are some corner rounders around, search the Café.

And soon you have a lifetime supply for your needs.

Ray

I thank you for the reply RG, but this is not helpful.

I have gone to a number of printers and they can not definitively tell me the best paper stock, thickness, or finish that would best work.

I am hoping some members of the café have had experience with this so I (or anyone else) do not have to waste time and time on reinvent the wheel, as they say.

What about buying a deck of Bicycle Double Blank cards and cut them?
With rather unexpensive equipment you can cut them and even re-do the round corners.

On Lybrary.com you find blank Playing Card Cardboard in two different sorts and in many different amounts.

Look under Topic -> Magic -> DIY, Makers & Builders.

You cut it to the right size and round the corners or let somebody do that for you.

I hope it helps.

Ray