Wobblycogs CNC Mk1

[Wobblycogs]

After trying every solvent and cleaner I could get my hands on I gave up and attacked it with a flap wheel and wire wheel. I'd only used a grinder once before to chase out a couple of electrical sockets and it was so messy I never tried again. I can't believe how much I've been missing out though, everything is going to get a good grinding from now on :-)

The angle brackets were probably the worst and they were awkward because as were small. Here's a before and after shot.

So after a few hours with the grinder I'd turned a pile of oily steel into a pile of clean steel ready for the next step.

From reading around on welding forms it seems the next step is to pickle with phosphoric acid rust remover and then undercoat. Does this sound right? I want to get an undercoat on before starting construction as I think this build will take a while and I don't want all this work being undone. If I decide to get a welder it should be fairly easy to wire wheel off the undercoat in a few places. Any recommendations for undercoat? I was just going to pop down Halfords and get some car spray undercoat.

[Jonathan]

That's far too shiny ;)

Powder coating is surprisingly cheap and saves you all the effort. I wouldn't be surprised if you can find a local company who would powder coat the finished frame for £30-£40.