Hi Etch aluminum with sulpheric acid. When I was repairing ally MTB frames with carbon/ epoxy we used old car battery acid as an etch. Clean up with water before layup. It's a bit rough but worked OK for us. Chris.

Hi
Where did you get the 22 oz glass?
Chris

Hi. Works fine with topsheet and vac bag for snowboards. You'll need to get some bleeder/breether cloth. It's like a poyester insluation fibre but in thinner rolls. Place it just beyond your edges under the overhanging top sheet and it'll act as a channel to drain away the excess resin. Just be care...

Hi. I seem to remember somone on the Grafsnowboards forum accidently making a concave base snowboard. Might be worth a search to see how it went. C.

Hi
I've done both. Made no difference to the 'flatness' of the base. I now recess it for all the ones I make.
C.

Hi. For what it's worth.... Learn to use Autocad. Once you get the basic concepts you'll love it. Import a .dxf from snocad 'tweek' it and import to CNC software. Machine your bits and bingo fast, accurate and fully flexible. Nearly every cnc can use a .dxf as can most cad. I've only used a few diff...

Hi. Where did you get the hose from?
Chris

Hi. Just read with interest the whole post and have a new angle on the cap/sandwich debate. To start with I'm making snowboards not skis and have no engineering training or knowledge but I'm a cabinetmaker and have worked with wood for a good few years now. In a ski/snowboard we are building a beam ...