Press brake precaution to prevent galling and cross contamination help

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I have heard of people using a layer of protection between a press brake die and stainless or aluminum  to help prevent any cross contamination or galling of the material for different reasons. Mine is appearance and contamination reasons between the steel dies. This project is all small items that will use around 2 tons, so nothing crazy. I have heard that one shop uses a thin layer of latex, does anyone have any suggestions on this and where I might find a material like this?
Reply:Some stainless and aluminum sheets can be purchased with the white film on 1 or both sides. That would be the simplest way to protect the sheet. Just peel it off where you need to work with it , then when you are done peel it completely.Miller xmt304,  Miller S22 p12, Miier Maxstar SD, Miller 252 w 30A, Miller super32p12, Lincoln Ranger 9, Thermal Arc 181I with spoolgun, Hypertherm 10000 ,Smith torches. Esab 161lts miniarc.
Reply:Yes, most standard gauge sheets I buy are protected, but for this project its not the case. I will be using the press brake to bend a bunch of small stainless solid round bar parts to shape, so I am looking for something to lay across the dies to protect the round bar.
Reply:3M make a film specifically for this purpose. The peel-off film, a few mils thick, that comes on pre-finished brushed stainless, for example, is very stretchy and resists poking your finger through, has good adhesion and comes off easily and completely, even after bending. I have some of 3M's clear film, that is used to protect fender edges against stone chips, that I might try whenever I need to protect a bend. But it would make sense that a broad range of handy materials, including tapes, wax/paper, films, wraps and foils, could provide some protection. Residue from some might be more difficult to remove.
Reply:I just found these few places to purchase some protectant film, If anyone has any other ideas feel free to add them. Thanks, Keithhttp://www.acrotechinc.com/standard-...ke-forming.phphttp://pressbrakeurethane.com/products.htmhttp://www.aaapressbrakedie.com/die-cover-film.html
Reply:Any time I need to do this, I've used the blue felt like sheets that come between our stainless when we order it. Works great. Another thought is to (since you're working with round stock anyway) make a top and bottom die out of stainless. I've made a few just for round stock, as the round stock had a habit of chewing up dies quickly.Sent from my SGH-T989 using Tapatalk
Reply:we bend lots of 12 guage sheet where I work.... Actually that is all we do, anyway, we were having a problem with the dies leaving a bend line in the sheet. The solution was just putting some urethane on the dies. It comes in rolls and you can select the thinckness you desire.- Christian M.C3 Welding & Fabrication - CNC Plasma Cutting-Mobile Welding-Custom welding and fabwww.c3welding.com
Reply:I do a lot of Alu at work and have been using diff things I found that just rubbing the Lenox cutting wax on the dies
Reply:Bending round stock in a brake on the regular dies is not wise.  I have seen so many dies marked this way.  If you have a section of old dies or make home made you save your proper dies.   I have used strips of masking tape to prevent carbon steel touching the stainless.  It only works for a few bends and is gummy to get off afterwards.
Reply:Yes, these are dies  I made for my application of bending the round bar and not to ruin my good dies.
Reply:We use urethane strips on the bottom die anytime the papered side of the metal is down to prevent rub marks on the metal. If you are doing light gauge and/or super critical don't forget to correct your bending angle for the added thickness.