Thursday, 1 June 2017

Setting up a guide-jig...

With the three smaller sections of the front of cabinet all painted up and finished I gave the same treatment (Sand > Seal > Prime > Sand > Paint > Paint) to the main frame.
Considering it had been in a bulky, part-built state in the in-laws garage for 3 years it was remarkably free of damage.

The two layers of MDF I had glued together to use for sides were coming apart very slightly in a couple of places but nothing that didn’t disappear under three coats of paint.
This left just the main speaker and housing unfinished and, truth be told, generally in a bit of a mess.
Previously I had mounted the speaker into a piece of MDF and given it a coat of primer.
It looked pretty tatty but worse still it seemed as though the paint that had been in holes of the mesh had fallen through and dried solid – give it a shake and it sounded like it was half full of rice – not good.
I made the rather drastic decision to open up the speaker front and shake the bits out – I started with a drill hole but struggled to get much joy. So I resorted to the tin-snips.

Obviously this meant I had to do something about the new mess I’d made. The free sample of speaker cloth I got for the smaller speakers was quite a course weave, so to match it I cut a square from a hessian shopping bag and attacked it with the some leftover black paint I found in a tester pot tucked away in one the better half’s craft drawers.
Finally, I needed to create a new, neat front plate.
At some point in the preceding three years the remainder of my MDF stash has taken some water damage. Luckily I found a couple of pieces that were big enough but, at only 5mm thick, I was presented with a new problem when it came to routing a neat finish as the routing bit guide wheel is 3mm on its own.
I tried cutting a square out, clamping extra MDF as a guide underneath, and routing around both -  but there was too much movement and the result was a total disaster.

Plan B was to build a guide jig using two scraps of MDF and my workmate.

With the piece of MDF for the panel clamped firmly on top of this I drilled a hole big enough for the router bit through the centre and then ran the router out to the edge and followed the guide-jig around.
It was quick, easy, and worked perfectly.
After the usual prep and paint it was simple case of assembling the pieces and standing back and admiring the results.
The whole affair felt like a victory – just the sort of win I need to keep me moving forward.

Next up – getting that control deck together.