Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 If any are missing.... make some out of 3/4" birch plywood. I have "masters" of every brace used in Heritage speakers. Saves me a massive amount of time.... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Glue types & fillers.... For most layups with glue, including stapled braces inside Heresy's, i simply use the Loctite. The Gorilla stuff is good, but very expensive and I cannot tell much difference in application uses. The resin and hardener will be discussed later. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 For Heresy-II's, since they are made from MDF.... damaged MDF is usually soft, fuzzy, and cannot be repaired unless you either cut do massive surgery..., or use this stuff to turn it back into a "rock" that can be sanded, filled, etc. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 For "surgical" purposes, I will use hand sanding sheets on a sanding "block" after I get the filler more or less in the applied thickness I need. Generally you will use P180 or P220 grit. Not too "fast", and not too slow. Good control and won't take too much off too fast.... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 For general surface preparation and initial "surgical" grinding.... I use a random orbital sander and either 120 or 180 grit dependent on how bad the damage is. The key is to cut into and sand away the areas that are messed up. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 To prep the surfaces after "surgery", prep veneers for stain, finish/polish, etc I keep an array of disks ranging from P220 through P1000. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Using the Heresy-I's as an example (easier to see...) The first layup or filling is done with the Bondo. I apply it in small amounts, sand it and then apply it until it's almost where it needs to be. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Another view Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Bondo? Yup... works perfectly, does not shrink, and can absorb the resin, epoxy sealer, etc. later.... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 The Heresy-II... however, requires another approach because the damage has eaten into the MDF..... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 After the initial "Bondo" filler routine, I inspect each area that needs attention and mark it with a pencil and an arrow as to which side will need the "final solution"..... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 On the Heresy-II... Sanding is brutal... You gave got to cut into the MDF to where it's no longer soft & mushy.... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Here's where the resin epoxy stuff comes into play.... Note the small pile of superfine sawdust that will be mixed in with the epoxy. Use a cut-off soft drink can to mix it. Reason... it will eat up and destroy a plastic container.... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Nothing is wasted 'round here... mixing sticks are cut trim pieces from Klipschorn bottom panels..... The solution has the consistency of light grease... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Ugly nasty stuff... Applied it looks like your speakers have some weird herpes, drippy STD, but no matter... when it dries, it will have penetrated and sets up like a rock... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Another view from the operating table.... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Looks ugly.... but it works.... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Meanwhile, the "goop" takes a minimum of 24 hours tp properly dry and set. It's marine grade stuff and dries slowly to prevent shrinkage, heat, etc. So..... A quick look at cutting veneer sheets. In this case I will cut the veneer for the Heresy-I's because the veneer for the H-II's has not arrived yet. Priniciple is, however, the same.... The panels are scrap Heresy panels that were kept because the damage to the cabinets was too bad to even attempt to repair. But.... I lawys keep one set of panels (just like braces) of every Heritage speaker as templates for new panels, and, of course to measure out for veneer. In this case, the veneer is PSA backed mahogany. PSA is 3M Pressure Sensitive Adhesive and is an industrial grade contact cement. When applied it will NOT come off. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 Another view... Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted September 28, 2008 Share Posted September 28, 2008 The finished pieces of veneer and the extra "scrap" cut into small pieces for use with finish color testing. It is extremely important that you test your stains on scrap pieces of the actual veneer that you will use. Not only test the "color", but multiple applications of the stains. Quote Link to comment Share on other sites More sharing options...
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