I’m working toward a new project which involves some composite layup. Previous projects I’ve done have suffered from a lack of a decent vacuum bagging setup. I’ve come up with a fairly low-cost option which also doesn’t need too much space.

• Parts
• 12V Vacuum Pump (you’ll need something)
• Passive Vacuum switch
• Vacuum bagging connector
• Various barb/fittings

I think the key realisation here was that I could get hold of a relatively cheap part that passively switches on/off depending on the vacuum. This means the pump doesn’t need to run at 100% duty (which it certainly isn’t rated for).

An upgrade that may be necessary is a vacuum reservoir - The first tests should be in the next few weeks so we’ll see.

For the ultra-budget vacuum bagger, a 3D-printed connector is also an option.