PMG Tips

Page Information	Page Information
Date initiated 	December 2021
Contributors 	Luisa Casella
==Purpose of Materials and Tips==
This page will link to Tips pages of other specialties that may be relevant to photographic materials as well as include new Tips added by PMG Wiki contributors.
==Tips Links==
* BPG_Annual_Meeting_Tips_Sessions - Note that many of these are photographic materials specific
* BPG Adhesive Recipes and Tips
* BPG Materials, Equipment, and Tools
== Treatment Tips ==
=== Water-tearing mending tissue - tools and tips===
Tools that can be used to water-tear mending tissue with a feathered edge:
* Refillable paint marker (filled with distilled water)
File:Water filled paint marker1.jpeg
File:Water filled paint marker2.jpeg
* Ruling pen
File:Water filled ruling pen1.jpeg
File:Water filled ruling pen2.jpeg
===Wheat Starch Paste Tips===
*Preparation tip: soak in distilled water for minimum of 24 hours, inside closed glass jar kept in fridge.
*Storage tip: store paste in refillable food pouch without straining (unstrained paste keeps longer). remove as much air as possible. Keep at room temperature (do not place in freezer).
File:Wheat starch paste in food pouch.jpg| Wheat starch paste stored in reusable food pouch 
== Tools Tips ==
==== Heat Tools ====
* Using an auto shut-off safety outlet helps avoid leaving electrical tools on by accident or tuning off a heat press after 1 hour
File:Auto shut-off outlet.jpg|Auto shut-off outlet helps prevent leaving heat tools on by accident
== Materials Tips ==
=== Borosilicate Glass ===
When replacing cover glasses, it is recommended to use Borosilicate glass that has high chemical durability and low thermal expansion.
Some suppliers that colleagues have used include:
Company Name and URL 	Location 	Minimum Order 	Prices 	Notes
Cat-i-Glass 	South Elgin, IL	1 (in 2021) 	250 USD ea. (in 2021) 	
Cincinnati Gasket & Industrial Glass	Cincinatti, OH 	 	 	
Howard Glass 	Worcester, MA 	 	 	
Insaco 	Quakertown, PA 	1,000 USD (in 2021) 	333 USD ea. (in 2021)	6 weeks delivery.
McCaster-Carr 	Elmhurst, IL 	 	 	2 weeks delivery. Fast quotes. More expensive but has low minimum order.
Pegasus Glass 	Cambridge, ON 	2 (in 2021) 	100 CAD ea. (in 2021)	2-3 weeks delivery.
Precision Glass and Optics 	Santa Ana, CA 	25 (250 USD in 2021) 	25 USD ea. (in 2021) 	
Swift Glass Company 	Elmira, NJ 	ca. 27 (150 USD in 2021)	5.5 USD ea. (in 2021)	2 weeks delivery. Have a setup fee that can greatly affect final cost. No sizing issues.
For a large daguerreotype panorama, a colleague used Gorilla glass from Abrisa Technologies.
Borosilicate glass has to be cut by the supplier and cannot be cut in-house with common glass cutting tools.
Note that glass suppliers have specifications for accepted scratch and dig damage so inspection of glass upon arrival is essential, and some plates may have to be replaced.
See also linked discussion post on PMG listserv.
=== Polyester web ===
Polyester web can be reused after washing, drying and flattening in heat press between silicone release papers at 200F for 20 minutes or placing in heat press and letting it cool under pressure.
File:Polyester web can be flattened in heat press.jpg|Polyester web can be flattened in heat press (right side flat)
File:Polyester web in heat press.jpg|Polyester web in heat press
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