My solera doesn't have slots so I can't insert my F-clamp to clamp the back like what I did for the last round.
Only my big F-clamp (which I only have 4 of them) can reach in just far enough to clamp.
I will use those for the tail block and heel.
For the rest, I still are unable to figure out how to clamp.
One of the way is to use strings.
So I tried a dry run to see how long I need.
I clamp the solera to the bench top.
Note that the solera is very heavy so I clamp onto it length wise the weight of the bench top won't topple in this way.
After that I proceed to use the string to clamp.
It took about 15 mins and that's way too long.
So I think I won't be using strings...
Any good way?
I did note that once the 2 big clamps are applied to the heel and end block area, the rest of them doesn't really need much clamping down.
So the go-bars might just do the trick.
I'll try that next...
Before I close the box I tap the back and compare to the sound clips which I have tapped and recorded before I added those radial braces.
As expected the pitch is much higher than the previous tap tone where there is only the traverse brace.
So I decided to lower a bit more.
What I am looking for is a deep bass growl.
The previous tap just sound a bit too high in pitch.
Lower towards the external edges
After trying various ways... the easiest is to use go-bars :)
Initially I thought go-bars doesn't have the strength to clamp down properly.
But I was wrong.
If one bar is not enough then simply add another.
The seam between the back and the rims are tight.
Think I can start closing the back all preparation are set.
Stay tune. (I took a pic but it was blurred so no pics to show the dry run process)
Well now is the real thing.
As I need to work fast I get everything prepared.
All the go-bar by the side within reach; the back marked to help with the alignment; the wooden block within reach; HHG all heat up ready to glue.
Before gluing I heat up the gluing area.
Then with quick hand I apply the HHG, and it started to gel already by the time I finished applying thru' out the rim.
I use the hairdryer to heat up further before gluing the back.
After a quick alignment, I began to put in the go-bars.
Luckily with the dry run, I realised I had to start from the inner side (though it's common sense, it's easily forgotten w/o dry run practice) to facilitate fast application of the go-bar.
After some adjustment I am all set all within 2 or 3 minutes or so.
Much faster than using strings.
It was adjusted up to cater for the taller back.
Well after 1 day's of gluing, I excited removed the go-bars and examine the result.
So far ok though it's not really perfect.
There are some gaps in the closing but none too big.
I trim off the excess edges using my favourite rebate plane and chisel at the waist.
Next to come is binding and purfling but that's another big headache.
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