Results 1 to 9 of 9

Thread: Finishing Engineered Rosewood

  1. #1
    Member JimC's Avatar
    Join Date
    Sep 2019
    Location
    SE England
    Posts
    275

    Finishing Engineered Rosewood

    Are there any thoughts on this (other than that the stuff isn't very satisfactory!). I've kinda acquired a barely started ESB4 kit which has got one of those fingerboards, and its quite obvious that the stuff is picking up every little bit of fluff going, and really badly needs sealing, unconventional though it might be.

    My background is boat building rather than guitars, and I have some very low viscosity epoxy sealing primer, and I was wondering whether it might be worth using that to seal the surface and consolidate the loose fibres. Is there any experience with that sort of concept?

    Jim C

  2. #2
    Member Cliff Rogers's Avatar
    Join Date
    Aug 2019
    Location
    Minbun, FNQ
    Posts
    114
    Watching, I have one on order.
    From what I have read, you can oil it if you want to, it is dryer than the real thing & will suck up the oil.

    I swiped this off another site.
    If you flood a drying oil or other finish that dries and hardens onto the board, some of it will likely get under the frets and make them harder to remove cleanly down the road when it's time to re-fret or defret.

    So applying the finish sparingly and carefully is important, regardless of what finish it is.
    Cliff

  3. #3
    Member JimC's Avatar
    Join Date
    Sep 2019
    Location
    SE England
    Posts
    275
    Having checked out my sealing primer its way beyond its expiry date, so we'll drop that idea!

  4. #4
    Overlord of Music Fretworn's Avatar
    Join Date
    May 2013
    Location
    Hornsby Area, Sydney, NSW
    Posts
    3,812
    Iíve only done one guitar with an engineered rosewood fingerboard.
    1) You do need to sand the fingerboard. Iím not talking 80 grit, but probably 240 grit and up. Basically polishing the fingerboard.
    2) Oil the fingerboard heavily with your fingerboard oil of choice before you mask it for finishing or doing fretwork and use low tack masking tape. Others have had tear outs from the board when removing masking tape, but I found this method meant the tape didnít really stick to the front of the fingerboard where the issues will be.
    Current:
    GTH-1

    Completed:
    AST-1FB
    First Act ME276 (resurrected curb-side find)
    ES-5V
    Scratchie lapsteel
    Custom ST-1 12 String
    JBA-4
    TL-1TB
    Scratch Lapsteel
    Meinl DIY Cajon
    Cigar Box lap steel

    Wishing:
    Baritone
    Open D/Standard Double 6 twin neck

  5. Liked by: JimC

  6. #5
    Member JimC's Avatar
    Join Date
    Sep 2019
    Location
    SE England
    Posts
    275
    Update/report.
    I splashed out and bought a new lot of epoxy sealer primer which Simon and I will share. Truly horrendous price for something we'll use so little of.

    My fingerboard was definitely the worst of the two. I mixed up 20cm3, and without thinking too hard gave it three (very tiny brush) brushed coats. This was much too much since I had definite brush strokes on the finish, and so I had to sand scrape and goodness knows what, and by the time I got it satisfactorily flat some of the board had turned decidedly purplish. On the other hand all the loosish fibres were thoroughly encapsulated and I was happy with the mechanical integrity. Simon and I took a look, and decided to give it a go with lemon oil, and to my relief the colour turned acceptable, and I'm content with the result.

    Simon's fingerboard is much better. I've given this a single wiped on and wiped off coat. Simon hasn't seen it yet, but I think its close to good, although lemon oil ill be an obvious thing to do.
    Build #1, failed solid body 6 string using neck from a scrapped acoustic (45+ odd years ago as a teenager!)
    Build #2, ugly parlour semi with scratch built body and ex Peavey neck
    Build #3, Appalachian Dulcimer from EMS kit
    Build #4, pre-owned PB ESB-4
    Build #5, Lockdown Mandolin

  7. #6
    Mentor jugglindan's Avatar
    Join Date
    Sep 2019
    Location
    Canberra
    Posts
    1,084
    Resurrecting this slightly old thread, as I have a similiar decision to make: what to do with the very unsatisfactory engineered rosewood fretboard on my kit. I seem to have three choices, and with no previous experience I am not sure how to pick between them.

    1. Seal the fretboard with GluBoost Fill and Finish, to improve the finish and integrity, then sand.
    2. Sand and use lots of lemon oil, applied frequently
    3. Pretend it's a maple board and sand and varnish the whole thing along with the rest of the neck


    TBH, I am wondering why I didn't just go with a maple board. Option 3 is tempting since it doesn't require spending yet more $ on a product that I will likely never use again. But has anyone here used clear poly or lacquer on an engineered rosewood board? How did it go? How does it feel to play?

    Option 1 requires buying more stuff, but seems like the best long-term choice.

    And yes, I know I have much the same topic, with some good advice, in my build diary. I am resurrecting this thread specifically to cast a wider net (is that possible here?) for other builders experiences with these options.

  8. #7
    GAStronomist Simon Barden's Avatar
    Join Date
    Oct 2016
    Location
    Reading, UK
    Posts
    6,723
    Not 1. It's the wrong product as its basically a filler, and hasn't got the strength to hold the fibres together. And you'd actually sand first, use the product, then sand again.

    Not 2. You aren't addressing the basic problem of lack of structural integrity of the fingerboard fibres. Sanding improves the feel, and will be necessary anyway, and lemon oil improves the looks (for a while) but again does nothing to hold the bits together.

    3 is a possibility, but whilst the finish will help hold the board together, it won't do as good a job as using thin CA.

  9. #8
    Mentor jugglindan's Avatar
    Join Date
    Sep 2019
    Location
    Canberra
    Posts
    1,084
    Thanks Simon. Which GluBoost product is the right one to order then? I can get it delivered in Au from Southern Tone Woods.

    Sent from my moto g(7) using Tapatalk
    Disclaimer: I haven't done woodwork since high school, and wasn't really paying attention at the time ...

  10. #9

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •