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Why not get a 3d printer - the principles are very similar and you'd have a 3d printer at the end of it...

The cooling fan is needed for small parts - if they're not cooled, heat builds up in the part and it melts. The fan is normally off for the first layer and is then turned on for subsequent layers -...

Have a look at ​http://e3d-online.com/Kraken-Supplies/The-Kraken - a bit expensive (but no more than three hot ends) and water cooled so ok in a heated chamber.

I don't think you do - if by rapid you mean G0 commands, the speed is set by the machine controller.

You want the head about half the slice thickness off the table (I'm assuming sli3er has used 0 for the first layer height) - this squashes the first layer down firmly.

The head needs to go on the...

I used clean glass at first and it was a bit hit and miss - I would think the frosting is an improvement.

The PVA is quite dilute (5:1), applied with a tissue and will dry while the bed heats up....

A 5mm layer of epoxy isn't going to generate enough heat to warm up a big chunk of metal far enough to generate any problems. Don't wait too long before pouring it though as it will generate heat in...

Have a look at HydraRaptor: Mendel90 - Seems to be one of the nicest designs at the moment

I've got one of these - Mono Mendel - RepRapPro which is similar in principle but uses a different frame...

The slats are sacrificial and the angled slot makes it easy to just drop a new one in - rather a neat design.

You just need to change the direction for the axis in stepconf (check the "invert" box next to the direction pin on the parallel port setup page).

Looks impressive, I'm a bit worried that they seem most proud of it's MS Office interface :confused:

What type of parts are you making?

I suspect they're fairly simple if it's possible to...

You can get USB to SATA adaptors which let you attach a bare hard drive as an external drive. I've used them for data recovery before - very handy for cloning a laptop drive.

e.g. ...

Have a look at this http://www.oneoceankayaks.com/madvac/machine_frame.htm

The key to getting a good finish is stopping the tool deflecting while cutting, there are several ways to ensure this...

All components between the tool tip and the workpiece must be rigid, not...