i probably will get this laser http://www.ebay.com.au/itm/2W-445nm...LH_DefaultDomain_0&hash=item27cdba750f&_uhb=1 because its already in the laser housing (thats if Copper Module is the same as laser housing)

It looks good make sure you guy a lens also.

What would be a good lens for it

This is what I got http://www.ebay.com/itm/260684420819

Ill be waiting for you results for the laser cutting test and with the laser holder/housing plate how will i get will it be able to get it will you send it to the open build shop or will i have to make it

I do not have a machine that can cut it out.

there are a lot of laser cutting service companies so maybe i could get them to cut it for me if its not too expensive

If that is the case you might see if @Robert Hummel would send you his plate design. it combines the gantry plate, motor mount and laser mount.

Robert Hummel will your Y axis carrage/laser mounting plate work with a 2W 445nm M140 Blue Laser Diode In Copper Module W/Leads(http://www.ebay.com.au/itm/2W-445nm...LH_DefaultDomain_0&hash=item27cdba750f&_uhb=1) and the Nema 17 Stepper motor if so is it possible that you can send me or let me buy from you(Im in Victoria Australia) your Y axis carrage/laser mounting plate

Thanks In Advance

Is your enclosure designed that you can view whats happening without having to wear glasses (not that i will do it but a bit more safety is always better) and when will you finish it and put up how to build it

Always use the glasses, Always !!!
read this : http://laserpointerforums.com/f53/hit-eye-1000mw-445nm-blue-laser-69469.html

If you read the rest you would have seen that I will be wearing the glasses I'm just asking is this for extra safety or is just for making it look better

It's not safe in you aren't 10000% sure that the material assorb enough power of the correct wawelenght of the laser

This answers your question:

Now I just have to figure out how to stop laser light exiting the room cause I don't think curtains over windows will stop it what should I use to put over the windows to stop laser light exiting the room

I am thinking I will just put in thin plastic walls on most of it and then go acrylic on a door/latch

All the dimensions i know is what is on the website and on it says the laser is in a 12mm x 30mm copper module

I still have a few things to do before i have a yes or no to will i do this build. the laser i will use depends on the results by JCPhlux results with using the laser using with the same materials i will be using

Well I will try to get it done soon. But be warned I am just getting started on this build so I am still waiting for all my parts to come in.

Change of plan i will be using the laser cutter in a room with no window and only 1 door if i will be running it in there will i still need the enclosure or i still need it will it be fine to have it like in the photo so no laser light goes in the direction of the door

well a room is not a good description a better one would be a metal shed in the back garden.
for fume extraction system i think it would be best to have the laser cutter in a sealed container(or something) and have 2 fans with tubes going throught the roof. what would be a good way to make a container for the laser cutter

Hmm toxic fumes over populated area i dont think that would be a good idea.
i know hardly anything about fume extraction so give me info about it designed for a noob

i cant seem to find any smoke capsules do you know where i can get some

I have 1 last thing to figure out Power supply what should i use to supply power to the laser cutter as well as 2 DELTA AFB0612LB 6015 60x60x15mm DC 12V 0.1A 3Pin Wire Cooling Fans (http://www.ebay.com.au/itm/1pc-NEW-...CPU_Fans_Heatsinks&hash=item4ac37eaa94&_uhb=1)

You have a good explanation of what you will need but not how it goes together. How will you connect the laser throught the LD2X board(with the arduino nano of course) and does it need a power supply or is that just for the fans.And how will you connect the fans to the power supplier