3 Axis CNC router

[JoeHarris]

To heat my workshop... Someone is lending me a couple of them. A minimum of 16 deg C as a constant temp is recommended and West System state: "As the temperature drops, epoxy becomes proportionally thicker, reducing its ability to flow out." They also state that air bubbles are more of an issue at lower temperatures.

[mekanik]

Hi Joe
If you have a vacuum pump you could knock up a degassing pot, i use an old pressure cooker.
Regards
Mike

[lucan07]

Hot air gun across surface would usually deal with any bubbles.

[JoeHarris]

Ready to pour! I made some little brackets to hold the mdf in place sealed both sides with silicone so hopefully no leaks! and heat gun and Vaseline at the ready!

[Wobblycogs]

Best of luck, looks like you've got everything prepared though so I'm sure it'll go fine.

[JAZZCNC]

careful with the heat gun joe you can easily cause hot spots which harden at different rate. Only a quick flash is needed and only if really needed. Few air pockets won't hurt anything.

Not quite sure what the vasoline is for thou.?

[lucan07]

Not quite sure what the vasoline is for thou.?

Vaselines for the same as heat gun apparently "Some like it Hot!"

[JoeHarris]

careful with the heat gun joe you can easily cause hot spots which harden at different rate. Only a quick flash is needed and only if really needed. Few air pockets won't hurt anything.

Not quite sure what the vasoline is for thou.?

Cheers Dean, I will take it easy on the heat. The Vaseline was for the mdf sides to act as a release agent... I think Clive suggested it?

[JoeHarris]

This is why you want slow cure epoxy - this a time lapse- the movement is barely perceivable in real time. well it's done. Now we wait...

[routercnc]

Great stuff especially the time lapse video. It might be worth keeping the bridge between the 2 rails in place during initial setting up if you need a datum to DTI off to align the gantry Y rails - depending on the gantry rail design you've decided on