Noel Induni's Stromberg Marimba

2000
 

Stromberg Marimba

Disassembly

 This Marimba has several issues to be dealt found on  the initial inspection.

Stromberg Marimba
Missing Headstock Inlay

Stromberg MarimbaStromberg Marimba
Minor Rim delaminations under the metal rim sheath

Stromberg MarimbaStromberg Marimba
Worn engraving and missing filler in fingerboard inlays

Minor oxidation on hardware flange, hoop and sheath

Tension hooks need replate or replace.
 

Stromberg Marimba
Cuppo- phone tone chamber and arch top ring in good condition.


  Repairs

Stromberg MarimbaStromberg Marimba

Rim work Gluing complete
 

Stromberg Marimba

Flange removed for polishing

Under the flange I found some delaminations on the flange mounting surface along with some detritus from sweat and other moisture that needed addressing.

Stromberg Marimba

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Rim Reassembly

Noel's Marimba

Noel's Marimba

Head Stock and Inlay Work

Then clean out the cavity, preferably with a carbide tip tool for a clean cut.

Stromberg Marimba Pic

Using the old inlay for a template, scribe around it and set it in the jig for cutting.
(Darkened in for your benefit)

Stromberg Marimba PicStromberg Marimba Pic

Then it's time to cut it out using care and the proper tools
This is still very tedious work and a time to be concentrating on the task at hand.

Stromberg Marimba Pic

And the finished cutouts.

Stromberg Marimba Pic

Then sand all the burrs and smooth the edges with a fine sandpaper ,checking the contour and depth.
If it doesn't seat properly now is the time to relieve the cavity a little or contour the inlay or both.
You do not hurry these stages, as it will cause grief later on.


Setting the new inlays


Stromberg Marimba Pic

Stromberg Marimba Pic

Set the inlays into the filler, pressing down gently but firmly, squeezing out the excess epoxy

Stromberg Marimba Pic

Next lightly scrape off the excess and wait for it to begin to set.

Stromberg Marimba Pic

All epoxies and adhesives in general shrink when catalyzation occurs and will leave a small indentation around the inlay.
(Contrasted to make visible)
 
 

Noels Marimba

Fretted and ready to go


Back from engraver

Noel had an engraver who was able to do a wonderful job by hand to closely replicate the original script.
Then Janet blacked it in

Noels Marimba resto

Neck Refinish

As we draw closer to the "Finish Line" the reapplication of Lacquer begins with several light coats to allow the bare wood to seal off.
Then heavier coats are applied, lightly sanding each coat with a 400# paper.

Noels Marimba

Noels Marimba
 

Noels Marimba

Noels Marimba


I like to lay on 8-10 coats of Lacquer to ensure the protection of the wood.

I use only the highest grade Nitrocellulose Lacquers,that are instrument grade.

I use three basic polishing compounds and one swirl remover.
I like to do most things by hand and if you are not experienced in machine polishing lacquers, I suggest the hand polishing method.
 

Noels Marimba

Noels Marimba

Looking at polished pieces

Noels Marimba


Re-tint Rim and dowelstick

This operation is being done at this time for two reasons.

I reassembled the rim for testing before I tinted it so as to not damage the finish on the Diss-Reassembly process.

Stromberg Marimba Resto

The dowel stick was my retention to hold the neck during tinting so now I will flip it around and do the dowel

First all old finish is to be removed from rim and I use a scraper to take the bulk off with then 80# paper for the rest.

 

 

Stromberg Marimba Resto
Stromberg Marimba Resto

Then I begin to seal the bare wood to prepare it for the tinted lacquer.

I'll use some leftover lacquer for this stage as it has the same pigment in it.

The following coats will be much darker.


Stromberg Marimba Resto

Here is the rim reassembled with lacquer work completed and matching the rest of the color scheme.

Stromberg Marimba restoStromberg Marimba resto
Stromberg Marimba resto

And fully assembled with new tailpiece,strings and bridge

Alongside of its younger Marimba brother (My Marimba)


Stromberg Marimba resto
 

Stromberg Marimba resto      Stromberg Marimba resto
 

Thanks for watching,
Vinnie