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Restoring a vintage Hofner Colorama II (lots of pics)


irishstu

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Musikkeller of Germany still has some replica and NOS parts for Hofners

like this tremolo cover for the 164, which unfortunately slightly differs from yours, but anyway, you did a great job in restoring the original cover on your Colorama

 

487mk.jpg

 

spotted this stripped body

 

053mk1.jpg

 

here's the link

Musikkeller

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Nice nut pictorial.

 

 

I agree. I've done a bazillion nuts and never heard of the half pencil trick. What a time saver! I'm going into the shop to make a few now (if I have more than one I won't lose any. Make only one? Buh bye pencil.).

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Thanks again fellas. I thought this was the way everyone made nuts. How are you doing it?

 

Musikkeller of Germany still has some replica and NOS parts for Hofners

like this tremolo cover for the 164, which unfortunately slightly differs from yours, but anyway, you did a great job in restoring the original cover on your Colorama


487mk.jpg

spotted this stripped body


053mk1.jpg

here's the link

Musikkeller

 

Thanks again, bieke. Actually, I know about Musikkeller. Project Guitar Parts is also quite decent sometimes: http://www.projectguitarparts.co.uk/Pages/hofnerparts.html

May I ask, are you a member of Hofner Hounds?

 

I found the exact tremolo cover I needed on ebay last week, but decided not to go for it, since that's not really what this restoration is about. I really want to learn as much as possible from all of this, and if I could just buy replacement parts I wouldn't be doing that really. I also found a lovely bridge that would've been perfect, but again, I'd already decided I wanted to make my own. I still regret spending 30 pounds on 3 replacement knobs, but it's too late to worry about that now.

 

Could I ask you a big favour though? Do you think you could measure the string spacing from the low E string to the high E string as they pass over the bridge on your Colorama? I worked out what it should be to give me a perfectly straight line from the tremolo cover to the nut and it was 43.6mm. However this means that the strings pass over the pickups really far from the outer pole pieces. I'm just curious what size Hofner ended up going with, as there may have been some compromising going on.

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:cool:here's a pic showing how the strings pass over the polepieces on my 164

 

Colorama1.jpg

 

and when I measured the string spacing at the bridge, it was nearly 48mm

 

Colorama2.jpg

 

hope this helps

 

edit : never heard of Hofner Hounds, I'm actually more a Framus freak

:cool:

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I haven't really posted many updates on the body refinishing because each new coat of red looked pretty much the same as the previous one.

 

However, it's nearly done now, so I thought I'd post where I'm at.

 

Here I'm doing a little bit of spot filling again after the second application of paint:

 

PC310938.JPG

 

Then carefully scraping off with a razor blade:

 

PC310946.JPG

 

To leave something like this:

 

PC310947.JPG

 

The guitar was then sanded all over in preparation for clear coat.

 

Here it is after two and a half rattle can's worth and several weeks of drying:

 

P1080016.JPG

 

P1150119.JPG

 

P1080017.JPG

 

The orange peel was then removed with 400 grit paper. I tried 600 grit first, but the clear coat was very hard and it was taking a long time to get through it.

 

P1150120.JPG

 

Partly done:

 

P1150122.JPG

 

Done:

 

P1150129.JPG

 

Then I sanded the whole thing again with 600 grit, 1200 grit and 2000 grit, which were, unfortunately, the only grades I could get:

 

P1150128.JPG

 

 

Now here's my problem. I've got the guitar feeling very smooth but as soon as I start to use rubbing compound on it, the scratches I've missed become very obvious. So do I have at it again starting with 600 grit, or do I keep rubbing it with compound until the scratches are gone? Ideally, I'd like to take it back to 400 grit, give it a few more coats of clear coat and then do a fine sanding, but I promised the wife I wouldn't be doing any more painting/clear-coating and I'm not sure how much more clear coat remains on the guitar, so I don't want to accidentally go through it somewhere.

 

Any ideas?

 

Would adding a wax polish after the rubbing compound maybe hide the little scratches left by the sandpaper enough to not be much of an issue?

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I promised the wife I wouldn't be doing any more painting/clear-coating and I'm not sure how much more clear coat remains on the guitar, so I don't want to accidentally go through it somewhere.


Any ideas?

 

 

Give the wife a "day of beauty" at a spa, and clear-coat it while she's gone.

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Morning, folks. I know you've all been losing sleep wondering how this is coming along, so here we go....

 

Firstly, I ended up going over the guitar finish with 600 grit again, only this time I used a sanding block and soapy water and sanded in a very specific direction (different from the 400 grit) to make sure I didn't miss anything.

 

f1200128.jpg

 

Then the next thickest grit I had, which was, unfortunately, quite a jump (1200 grit). Still I did what I could, again sanding in a very different direction.

 

f1222528.jpg

 

And finally 2000 grit, again more of a jump in grits than I would've liked, but these were the only grades I could get my hands on.

 

f1227136.jpg

 

After that, I went at it with rubbing compound. I've no idea how I survived without this stuff before.

 

f1235712.jpg

 

Unfortunately it was getting dark, I wasn't watching what I was doing carefully enough, and I got a bit too aggressive with the rubbing compound. This led to me bolloxing up the lacquer on both sides of the upper horn. Disaster.

 

f1288512.jpg

 

I decided to document the quick repair in case it might be of use to someone.

 

Luckily there was a fairly thick layer of lacquer in this area, so I didn't need to add any more.

 

Firstly, I carefully scraped some excess away with a razor blade.

 

f1301504.jpg

 

Leaving this:

 

f1310848.jpg

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Then wrapped some 400 grit around a wine bottle cork and stapled it into place.

 

f1315520.jpg

 

Being careful to follow the contour of the guitar, this left something like this:

 

f1320128.jpg

 

Then 600 grit.

 

f1329600.jpg

 

Leaving this:

 

f1334208.jpg

 

1200 grit (wet):

 

f1338816.jpg

 

f1343296.jpg

 

And finally 2000 grit (again, wet):

 

f1361664.jpg

 

f1366208.jpg

 

After that, it was a case of (more carefully) rubbing it with rubbing compound, to leave this:

 

f1370880.jpg

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This is the part I've been waiting on! Seeing how the final steps of the refinish would go. I've done a few but you can ALWAYS learn something else... esp if it's on someone else's dime. :lol:

 

I've used 3M Rubbing Compound on every project I've done and in fact, on most guitars that I bought that were kinda scratched up. Am I looking at the pic wrong, or does it actually seem the top layer of finish slightly pulled away from the guitar?

 

Regardless, that's definitely a bummer.

 

Are you happy with the rest of the finish?

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This is the part I've been waiting on! Seeing how the final steps of the refinish would go. I've done a few but you can ALWAYS learn something else... esp if it's on someone else's dime.
:lol:

I've used 3M Rubbing Compound on every project I've done and in fact, on most guitars that I bought that were kinda scratched up. Am I looking at the pic wrong, or does it actually seem the top layer of finish slightly pulled away from the guitar?


Regardless, that's definitely a bummer.


Are you happy with the rest of the finish?

 

Hey cratz2. I think it was kind of a friction melt thing going on there. I had the guitar clamped onto my workbench, sitting up vertically, and I was holding opposite ends of a rag with each hand, also pulling upwards. I basically polished that area a bit like someone would shine your shoes and I guess it just got a bit too hot down there. Still, lesson learned, and it wasn't a complete disaster or anything. In fact I kind of welcomed the opportunity to learn another trick on this guitar rather than an expensive Gibson or something.

 

My only complaint with the finish is that you can still see horizontal lines from the 600 grit/1200 grit transition, and I REALLY tried to get them out when I went at it with the 1200 grit. They look obvious in photos, but they really aren't in real life. I suppose if it really annoys me, I can go back in there with 900 grit once I get my hands on some, but so far it's not bothering me at all.

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Anyway, time to start putting it together. I actually ran into quite a few problems at this stage, which I'll explain later.

 

Scraping out some of the crud before fitting the tremolo (excuse the shaky photo):

 

f1375360.jpg

 

Making new holes, since the old stripped ones had been plugged:

 

f1392960.jpg

 

Before fitting the tremolo, I wanted to mount a ground wire to it, but I wasn't too happy about connecting it to the base since I wasn't sure how the signal would transfer from the main block/drum bit, so I thought about some options and noticed that the threaded hole that holds the arm lever on the top goes all the way through the drum (although it's not actually threaded all the way through).

 

f1410816.jpg

 

So I tapped a thread a little bit into the bottom and connected the ground wire there:

 

f1415232.jpg

 

All fitted back in:

 

f1424256.jpg

 

And from the top (you can also see the ground wire coming through into the control cavity, which I've also shielded):

 

f1428480.jpg

 

Finally, the pickguard/scratchplate holes are marked and re-drilled, so that it too can be re-fitted:

 

f1458816.jpg

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Looking good, Stew! Too bad you didn't have all the sand papers for a smooth transition. For future reference you might look into a set of the MicroMesh abrasive cloths or pads. They pickup where conventional sandpaper leaves off with grits ranging from 1200 or 1800 (I can't remember which) all the way to 12,000! They last a long long time when cared for properly. I use them with soapy water and change the water between grits. You don't want the old large particles getting rubbed around when you are attacking the surface to create ever smaller abrasions. I don't even bother with rubbing compounds now. BTW, I even resurfaced a bowling ball with the stuff. :lol:

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Thanks again for the feedback. It's sometimes hard to know otherwise if anyone's reading this, so it's very much appreciated.

 

axegrinder, I have a set of the micro-mesh pads from stewmac (http://www.stewmac.com/shop/Tools/Sanding_Tools_and_Supplies/Micro-Mesh_Soft_Touch_Finishing_Pads.html), but the thinnest one is 1500 grit, so it still doesn't solve my problem of going from 600 to 1200. It's really not a problem though. Either I'll live with the very thin scratching (it's hardly visible under normal light), or I'll see if a wax polish hides it, OR if it ends up bugging me, I'll go at it again with 900 grit. Really not an issue.

 

I also managed to make a new bridge, by the way. Expect updates presently.

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Thanks again, fellas. :thu:

 

OK, as far as the bridge was concerned, I'd got as far as roughly radiusing a brass bar to 9.5". Now it was time to shape it so the strings would intonate properly.

 

First, I put some little pieces of copper under each string. These are actually little cutoffs of thick copper wiring:

 

f1486016.jpg

 

Then I check with a tuner and move the copper wires forwards or backwards until the strings are intonating properly, then mark the position with a pen.

 

f1495168.jpg

 

After that, I remove the bridge from the guitar and mark it with a couple of lines that will more or less cut through the six marked positions. There's a certain amount of compromising going on here, but it should still end up giving acceptable results.

 

f1568000.jpg

 

After that, I start to shape the bridge using fairly thin files:

 

f1572416.jpg

 

f1576640.jpg

 

Giving us this basic shape:

 

f1589696.jpg

 

Then I start finishing it, just like the guitar finish, starting with 400 grit paper and going up to 2000 grit:

 

f1602816.jpg

 

Finally I hit it with rubbing compound:

 

f1602820.jpg

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