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honza992

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Posts posted by honza992

  1. 8 minutes ago, Manton Customs said:

    I’ve used west systems before to grain fill also, but preferred the z poxy as its a bit easier to work with. It also sands much, much easier than WS which really helps when a few coats are needed.

    Like Aquacoat its not cheap either but even the smallest quantity they sell should do a couple of basses.

    OK, that's interesting that you say it's easier to sand.  I'll give it a go.  Just out of interest, do you use the 5 or 30 minute? And do you sand back to bare wood?  Really appreciate the info!

  2. All, thanks so much for your comments.  This one took a long time to finish, especially the finish😬, so it means a great deal to me that you like it..👏👏

    @Manton Customs Thanks for advice re grain fill.  And yes, it's really annoying that something like Aquacoat is marketed in that way.  I've tried it multiple times using different application techniques, and never get anything other than rubbish results.  And it 'ain't cheap.....  Thanks for the advice re Zpoxy.  I've tried West Sytems (which I use a lot for gluing) in the past with varied results. I should probably give it another go.  

    @Unknown_User  Grain fill is one of the those things that sounds easy, but most people seem to find pretty difficult.  As far as I understand it, the basic options are:

    1.  Sand and slurry with truoil or similar.  This works pretty well in my experience, but is messy.  Ideal if you are using truoil as a topcoat.  I'm not sure how compatible it is with other finishes.  I think @Andyjr1515 uses it under oil based varnish, and I use waterbased polyurethane over tru oil when I am burying my logos.  

    2.  Paste filler like Stewmac's Colortone (waterbased) or Rustin's Grain filler (oil based).  I've tried both and not had great luck with either.  I never seem to be able to sand back to a smooth finish while keeping the gunk in the pores.  But this is probably the most used grain fill technique.  

    3.  Epoxy.  I've tried West Systems in the past, and @Manton Customs uses zpoxy, I imagine they're very similar. I'll probably return to this next time.  Epoxies are two part and you need to be careful that your ratios are correct otherwise curing can be a problem.  West System I've never had a failure with, but I have with Araldite and another one (forgetten the name though), and I'm pretty careful to measure everything out as accurately as I can.  Assuming you've got the ratios right,  it also dries rock hard so you want to get as much off the surface of the wood otherwise sanding flat is a right pain. 

    4.  Endless other options - egg whites, shellac, etc etc etc 

    Like all of guitar building, you probably need to go through a few of these to see what works for you.  I'm still searching for the easy and failsafe answer to grainfill.  If I find it, I'll ket you know.  And by next year I'll be a millionaire......

     

     

     

    • Thanks 1
  3. I'm not sure whether anyone is interested, but I've just finished a guitar with a brushed nitrocellulose lacquer finish.  I always swore that I'd never use nitro - too poisenous both for me and the planet.  However, a friend asked me to make them a Tele using a beautiful piece of flamed spalted maple, and nitro was the only finish that worked.  Polyurethane, oil and CA glue turned the test pieces into a dull splodgy brown mess, not exactly the look I was going for.  Nitro though brought out all the beautiful colours and let the flame really sing.  

    Here's the piece of wood before I started....

    Archdale-Chris-Tele-LR-4-2.jpg

    Although I do spray waterbased polyurethane, there's no way I can spray nitro so I thought I'd try brushing it on.  The internet though had almost no information about whether it was possible to brush it on, how to do it, or what the results would look like.  So, hopefully this thread will help you decide if you want to do it.  It is definitely not an easy option, but.....let me get up some finished pics, and you could decide whether it was worth it. 

    This is what I used:

    IMG-20190517-103341.jpg

    This is Rothko & Frost's standard gloss nitro that they sell neat, ie not in aerosol.  This was a 250ml bottle and I used the whole thing plus a bit more on the body.  I brushed it on with an artist's brush, a trick I stole from @Andyjr1515. You need to make sure that it's a brush for oil paints, with natural bristles, otherwise the solvents can melt them.  I used a Daler Rowney Bristlewhite hog hair fan brush, size  4 (though a size 6 might have made life a bit easier).  They are comically long so I cut mine to a more manageable length. 

    Schedule was something like this:

    1. Sand to 220

    2.  Grain fill with Aqua Coat 

    3.  Ignore the fact that the grain fill was pretty poor and crack on with finishing (john, john, john, will you never learn?🙄)

    4.  Brush on R&K Nitro, thinned with 30% R&K cellulose thinners, probaly about 10 coats.

    5.  Curse myself repeatedly for failing to grain fill properly.  I've made enough guitars to know that preparation is everything, and if you want a smooth finish grain fill is critical.  Impatience though sometimes clouds my already pretty poor judgement

    5.  Wet sand with Wet/Dry paper (water with a drop of Murphy's oil soap) with 600 grit. 

    6.  Another unknown number of coats. It felt like hundreds, but was probably another 5 or so. 

    7.  Wet sand 1000 grit

    8.  'wet' sand with Gerlitz Carnauba wax on a piece of Mirka Abralon 1000 grit.  This left exactly the satin sheen I was after. 

    I found the key was to brush the nitro on in one stroke, never go back over somewhere you've just painted.  Because the nitro dissolves the layer before, I found the brush would start 'sticking' as it got caught in the previous layer.  My approach was to do lots and lots of layers, knowing that I would have to go back and wet sand quite a lot of it off to get it completely flat. In reality, because my grain fill was....well, shite.....I had to do many many more layers than I otherwise would have had to have done.  If I ever do this again, I'm hoping that 10 layers in total would be enough, assuming a flat surface to begin with.  I lay the guitar flat on a 'lazy susan' turntable, did the top and the sides at the start of the day then turned it over and did the back and sides.  

    Would I do it again?  Ummm....yes, and no.  Yes, if the wood was crying out for nitro, as this piece was.  I'd be a bit reluctant to do it again on an entire guitar body though.  Even though it was brushed rather than sprayed, the fumes were still pretty bad, and I wore a proper mask with organic filters at all times.  On a guitar with a binding like this one, next time I'd probably brush the top with nitro, as above, but do the rest of the body with something else, tru oil probably.  The binding would provide a natural break between the two finishes, so the two finishes wouldn't ever touch.  And on a flat surface like a guitar top (rather than the fiddly curved inner horns) you could whizz through the process in no time. 

    It's worth mentioning that the Rothko & Frost nitro specifically says it is not suitable for brushing, though I'm not quite sure why, as far as I could tell it went on perfectly nicely.  The process also used much less nitro than you would get through if spraying (I think).  With a proper grain fill I'm pretty sure I could do a whole body with one 250ml bottle.  An aerosol contains about 150ml of nitro, so I used probably the equivalent of two aerosols worth.  I've never finished a guitar with rattlecans, but I'm pretty sure it would be many more than that. 

    So all in all I'm pleased with the result (but the next one is going to be Danish Oil, which I can do on the kitchen table😂😁).

     

    And some photos.....

    NC500-10.jpg
    NC500-5.jpg
    NC500-18.jpg
    NC500-16.jpg

     

     

     

    • Like 21
  4. Finally, my work here is done.  It was the normal story for me, woodwork went more (or less) smoothly, finishing was a nightmare.  Anyway, at third attempt I am very, very, very happy with how it's turned out.  I really like the 33" scale - with careful positioning of the bridge the overall reach is probably 2 inches less than a standard Fender 34".  The weight is just under 8 lbs, so very light for a jazz, but the balance is absolutely perfect - it sits naturally about 30 degrees above horizontal.  The finish is like double cream, silky smooth, really incredibly smooth, but matte at the same time.  It really makes you want to touch it....or even...no enough.  Get on with the specs.......

    • Scale: 33"
    • Shape: Slightly undersized Jazz
    • Body wood: Alder (no weight relief)
    • Neck wood: Maple, flatsawn
    • Fretboard: Rosewood
    • Pickups: House of Tone '62 PJ set, installed with the P pickup reversed
    • Electronics: Passive, 500k pots
    • Tuners: Ultralites
    • Bridge: Wilkinson
    • Other: Mother of Pearl Blocks, white plastic binding
    • Weight: 7lb 14oz (3.65kg)
    • Balance:  Absolutely spot on
    • Colour: Vintage White (1:2 General Finshes Snow White & Antique White)
    • Finish: General Finishes High Performance clear coat, sprayed with HVLP
    • Strings: D'Addario XL Nickel wound 45-105

    Other than for the purposes of set up, I haven't really had the chance to play it yet.  I like to get proper photos does immediately (before I drop it), then I just haven't had the chance.  First impressions though are very very positive, particularly of the P pickup, which sounds massive!  More dets to follow. 

    Anyway, here are some studio shots.....
    Archdale-3.jpg

    Archdale-6.jpg

    Archdale-23.jpg

    Archdale-17.jpg

    And a few I took at home....

    IMG-20190328-174746.jpg


    IMG-20190328-180309.jpg


    IMG-20190328-175036-2.jpg

    • Like 12
  5. Finally, I'm able to do a quick update for this one. 

    I managed to sand through so had to heat gun and scrape back to bare wood to start again.  Then I resprayed colour and clear coat then managed to sand through again.  So I had to heat gun and scrape back to bare wood.  Again.  So I resprayed colour and clear coat then managed to sand though ag.... only joking,  twice was enough. 

    So, the body is now finished and looks more or less like an enormous Mr Whippy.  It's super super smooth and creamy.  It's lickalicious....

    IMG-20190325-140523.jpg

    It may, just may be finished tomorrow.  Assuming I don't drop it.......

    • Like 3
  6. On 04/03/2019 at 22:30, Jabba_the_gut said:

    yOIIF3r.jpg

     

    This is as good as it gets.  Until you've tried to do it, beautifully smooth creamy end grain like this may look easy.  It really isn't. 

    Jabba, I have a folder of photos of your sanding, just to remind me of what I should be aiming for.  

     

    Edit:  Jabba, can I ask what the string retainers are that you use?  They look as though they work really well. 

    • Like 3
  7. I use an HVLP turbine and spray water based polyurethane - General Finishes High Performance and their Milk paints for colours. 

    Would I recommend it? Ummm....I'm only a few in and for me it's certainly no easy option, or at least I don't find it easy.  Extraction, face masks, lighting, endless coats, sanding dust, sand-throughs.....I'm just finishing a cream P/J (and will update the long dormant thread) and until this afternoon I swore I would only use Shellac, wipe-on poly, or Tru Oil from now on.  I hate spraying, but.....oh my, it's ended up lovely.  Smooth, silky, beautiful....

    If you want to spray nitro then it has advantages over water based poly.  The layers melt in to each other so the process is all a bit easier.  However, unless you have excellent explosion-proof extraction you can only use aerosol cans outside.  And even then the fumes are pretty awful while spraying, and the body gives off lots of fumes while drying.  It is possible to brush on nitro (and in fact I'm just finishing one now that was mostly brushed, thread awaits) but I'm not sure I would recommend it. 

    So, largely, I would say I hate spraying.  But YMMV, obviously.  There's a great waterbased thread on Talkbass which is the gospel if you want to go that route.  Though the finishes they use there are impossible to find here.  Lots of them use cheap HVLP systems that painters use.  If you're doing more than two or three guitars then it would work out cheaper than aerosols, and I think the results would probably be similar. 

    So my advice, is wipe-on poly or tru-oil applied with a rag!  But if you are in the Nottingham area and want to pop in to the workshop to talk through what I do, you'd be very welcome. 

     

    • Like 2
  8. 3 hours ago, Andyjr1515 said:

    Hi, @honza992 !

    Sorry for the delay in reponse.

    I've used it a couple of times and yes, it works, but it is not my favourite. 

    It's easy enough to do: basically, separate the egg white, take out the stringy bits, break it up a bit with a fork and then either just brush it on, or better, slurry it on, then let it dry fully.  Then either repeat, or just sand down with very fine paper.

    What I like about it is that it doesn't tint the wood.

    What I don't like about it is that it is VERY wet.  And that means it raises the grain....and that sometimes makes things worse.

     

     

    Cheers Andy. Can I ask what woods you've done it on? Anything open grained?

  9. I've got a build (spalted maple, walnut) in the final stages of finishing.  As usual my grain fill was poor so it's taken many many more coats than otherwise it would.

    I've tried a few grain fill techniques in the past (filler, epoxy, tru oil slurry, shellac) and all are pretty frustrating.  

    I've come across mention of egg whites before, and I know it's something @Andyjr1515 has used before. 

    Anyone (ummm.....Andy?)   care to elaborate on method, and when to use it?  Would it fill deep grain like ash, or moderate like mahogany/walnut?  Any idea what finishes it would be compatible with?

    This build is nitro, and after experiencing the horror of that I'm really looking for all-natural finishing techniques!  (Build thread to follow, if I ever fill those damn pores.....)

  10. 21 hours ago, Andyjr1515 said:

    Not at all worried about standard plastic covers, to be honest, @honza992.  BUT I have a bookmatched ash cover gluing at this very moment, such is the crazed world of Andyjr1515 guitar and bass building!  :lol:

    Did anyone ever tell you what a mighty fine bass that one of your looks.... 

    😀😂 Ha ha, wow you really don't hand around!  Good job. 

    • Haha 1
  11. First things first, that's another top class job Andy, congratulations.  You must be well chuffed.

    I'm going to get bullied (and rightly so) for saying this, but sometimes I like the look of a normal black plastic control cover on a natural wood guitar.  Sometimes I think the mixture of grains and woods gets a bit much, and the plain black provides a bit of relief and contrast.  And also it would match the black hardware and pickup covers really nicely.  Here's one of mine in mahogany and maple:

    3.jpg

    You probably hate the idea, but if not and you're passing, pop in because I'm pretty sure I've got some scrap black pickguard that you can use to check how it looks.....

    As far as the warping question goes, I'm not sure about the Hawaiian climate, but I've definitely had wood control covers warp simply from applying finish. 

     

    • Like 1
  12. I've got the same router as Christine, Trend T11.  In a million years it will still be creating sawdust while the cockroaches make copies of vintage Fenders.  And being able to adjust the height through the table is great - I would never buy a large router without this feature. 

    Unless you want a smaller palm-type router in which I case I very strong recommend the DeWalt D26200:

    https://www.axminster.co.uk/dewalt-d26204k-2-in-1-router-1-4-ax847127?sel=952707

    If you can only afford one, then I would go for the DeWalt.  I think it is the single best-designed piece of machinery I own.  Easily powerful enough to do every job in guitar building (if you take the body routing in multiple passes), and if you can afford it the kit which includes the plunge base is definitely the way to go.  It is waaaay better than the Bosch Colt palm router thingy that the Americans seem to love.  The DeWalt is proper quality, with a fine depth adjustment system that is better than anything else I have seen. 

  13. On 03/01/2019 at 15:11, Si600 said:

    This process, number 3, is also done wet with Tru-Oil slurry?  The same process as grain filler but with finer grades of wet/dry?

    What sort of wet/dry do you use, the normal car body repair stuff?

    Yes, wet sanded with tru oil as a lubricant.  I didn't dry sand at all.  The difference is that as you go up the grits you need to get more and more (and then more) careful that you don't leave any wet tru oil on the surface - wipe off really thoroughly.  If you don't it will dry in ridges which the finer grits won't shift.  

    I either used Matador Wet & dry (bought from Amazon) or Mirka Abralon (which is a foam back abrasive).  Both worked fine. 

    Good luck, post your pics here!

  14. 27 minutes ago, Christine said:

    I've not had time but I will get on with them first thing into the new year, I had them out yesterday for the first time in ages and they're rock hard so all they need is a rub down and a polish a couple of blobs of solder and they will be done

    Hurray!  Can't wait. 

    • Like 1
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