Pin-up answers:

Foamboard is probably what you are looking for - found at art supply stores or arts & crafts stores.

Some Foamboard For Sale

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Best Match Items Ending First Newly-Listed Items First Price + Shipping: Lowest First Price + Shipping: Highest First

Soft Top 8 SURFBOARD Wave Storm funboard foam board long board
	$160.00 Time Remaining: 2d 23h 40m Buy It Now for only: $176.00 Buy It Now | Bid now

MightyCore Self Adhesive Rigid Foam Board 3 16 x 24 x 36 10 pcs Black
	$67.88 Time Remaining: 8d 9h 55m Buy It Now for only: $67.88 Buy It Now

BZ FOAM BOARD 6 SURFBOARD SKY BLUE MISSING PARTS
	$5.50 (2 Bids) Time Remaining: 4d 12h 11m Bid now

NEW Elmers Sturdy Foam Board 900802
	$30.99 Time Remaining: 3d 6h 58m Buy It Now for only: $30.99 Buy It Now

Pin-up answers:

Contact a company called 'Glamour Shots'; they will look after all of the details for you and the results will be amazing.

Or you can check for local photography studios that do pin-up and/or boudoir photo shoots.

Pin-up answers:

Yes, different metals are sometimes heated during production for various reasons, most commonly to harden the material. This is done by heating the metal to a high temperature (above the transformation range) and holding it. The metal is then cooled rapidly which changes the grain structure and makes the metal very hard and brittle. After this, the metal is tempered to increase its ductility (so it won't fracture as easily).

This is a process done during production, thus many factors are monitored and checked along the way.

Simply heating a metal (such as a bobby pin) will increase the hardness making it stronger, but also make it more brittle. For the application you sited, this will actually hurt you in that the bobby pin will be more likely to break. You may need to get custom made picks...

Pin-up answers:

Check your local college art department - I am sure there is a student or perhaps an instructor that can help. Of course, your tattoo artist might be good enough for the task...

Pin-up answers:

Edward D'Ancona Gallery

http://www.thepinupfiles.com/dancona.html

Peter Driben Gallery

http://www.thepinupfiles.com/driben.html

Al Buell Gallery

http://www.thepinupfiles.com/buell.html

Enoch Bolles Gallery

http://www.thepinupfiles.com/bolles.html

Vaughan Alden Bass Gallery

http://www.thepinupfiles.com/bass.html

Joyce Ballantyne Gallery

http://www.thepinupfiles.com/ballantyne.html

Rolf Armstrong Gallery

http://www.thepinupfiles.com/armstrong.html

Keep searching at that site. as your taste may not be reflected by these artists...