The materials used are dangerous, harmful and noxious, specially the epoxy which has no smell (slightly ammoniated). The usage of resins is not the only safety risk of shape activity. The sandpappering of the Airex core or the board have to be taken into consideration for you health. Those materials have to be used with a high level of Individual Protections :
the eyes,
the respiratory tract,
the skin.
To have the maximum of safety, you must use the appropriate protection equipments.
[1]
Protection glasses.
[2]
Respiratory mask equipped with type A1B1P2 cartridge : organic steam, inforganics and solvents, inorgani steam and particules.
If you want to make a board under vaccum, a vaccum pump is needed. Fridge compressors are the right tool . The vaccum regulation is highly recommanded. Most of the freeshapers are using a vaccum between -0.5 to -0.7bar.
I designed an electronic manometer to do that. Every usefull data are in the following page : http://wishbone.free.fr/fr_manometre.html But few people are designing electronics circuits, the best and simplest way is to use a vaccum switch like the one sold by
[turl]farnell http://fr.farnell.com[/url]:
To maximize the strength of a composite board, epoxy resin MUST be well polymerized. Depending on the resin type, several processes exist : UV rays or hot temperature.
For our resin type, we need hot temperature. I will show you how to build an oven. This is simple to build to use and CHEAP/not expensive.
You will need :
some wood boards.One of them must be 150cm long,
2 lamp sockets,
wire + male plug,
thermal insulating thin film (about 1.5m square shape piece).
You have to assemble everything following the next instructions :
[1][2]
[3][4]
[/4]
To use it :
a good "cooking" is 6 to 8hours of heat between 50°C - 60°C (conversion to be done in °F). If the external temperature is too high, you can reduce the internal heat by removing one of the 2 lamps..
. The vaccum regulation is highly recommanded. Most of the freeshapers are using a vaccum between -0.5 to -0.7bar.
