New BassChat 8"Cab design

[Rosie C]

On 18/12/2025 at 10:40, nekomatic said:

Can’t remember exactly but I’m pretty sure I just squeezed mine flat between a couple of pieces of wood and a couple of clamps. 

 

I was thinking along those lines, specifically, sandwich it between two pieces of 18mm ply, then drive my van onto it   

[tauzero]

Do you have to remove the rim from the grill first? It's going to somewhat constrain the flattening if you don't, isn't it?

[rwillett]

9 hours ago, Phil Starr said:

Not very helpfully it took around 15mins, so I'm not sure what is going wrong. I've bashed a lot of metal in the past when I welded my own car bodywork amnd I've dressed a lot of lead when working on the roof so I'm probably fairly efficient. You kind of settle into a nice steady rhythm keeping the work moving. 

 

I'm trying hard to picture what you might be doing. I look not for the high spots but the bits where the metal is most bent. Are you perhaps going for the middle.  The bent bit is around the cicumference around 2-3cm in from the edge (roughly, I dont have it in front of me). Knock these flat and the centre will start to lay flat. Push the middle down without taking out the edges will just mean it springs back.

That's exactly what I am doing. I'm working 2-3cm from outside edge, carefully going round, trying to keep the rubber mallet full face onto the metal. Every so often, I turn the grille over so it's being bashed from both sides.  I've done over an hour on it and it is slightly better, but if I look at it edge on, I can see where the bends were put in 2-3cm from the edge, its not as bad as it started with. 

 

I'm bashing against softwood and I wonder if that's the problem. I'm going to try and find something different to hit against, possible a paving slab or something, cover the slab with material.

 

I can't use plywood and drive the car over it, as I've cut it up for speakers  

 

Rob