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erikbojerik

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Posts posted by erikbojerik

  1. Getting a speaker cab to output anything near the 10Hz range is going to be a real challenge - to do it right you'll need a custom cab, ported properly and really deep, probably using "high excursion" speakers which displace a lot more air than the normal speaker. Eminence makes some neo versions that will lighten up the cabinet a bit, but you'll still need a monster cab.

  2. Think of "stain" and "dye" as two different things.

    Dye is just pure color, dissolved in either water or alcohol as the solvent. Either would be fine under Tru Oil as long as you let it dry completely (I'd give it 24 hours after the last application before your first coat of Tru Oil).

    Stain usually has other additives in addition to color, like urethane or varnish of some kind, or oil. If you go with stain, it may or may not be compatible with Tru Oil.

    I'd go with dye.

  3. The sun rises on the final day that the BH-8 is in the shop - Ben is coming today to pick 'er up.

    BH8-15.jpg

    The stacked volume-tone pot arrived the evening before, but I discovered this morning that the threaded part of the shaft was not long enough to protrude through the thickness of the top. So - of course - the day Ben is due to arrive, I am routing more wood from inside the control cavity!! :D

    All's well though. Finally, the man has the instrument in his hands.

    Benthe8-2.jpg

    Benthe8-1.jpg

    Clips to follow.

  4. Pickups - yes, the bit that is extending beyond the outer strings is due to the fact that these pups are mainly modified stock humbuckers and P-bass pickups. Bartolini does not make a 3-string bass pickup :D , nor a 5-string guitar pickup :D - and we do not want the bass pups to pick up the guitar strings, and vice versa.

    There are two output jacks (bass & guitar), and they will go to separate amps.

    Ben is coming over to pick it up this weekend, I will be sure to record some clips.

  5. Got it all together this weekend - fretwork done, neck on, hardware on, strung up, set up - and it made its first noise. I LOVE that moment, it is like a child being born.

    Or Frankenstein coming to life (take your pick).

    Only bummer - the dual-concentric pot I ordered for the stacked bass-tone knob for the bass pickups has a wierd center detent on both shafts, NOT what you want on a volume pot. :D So I ordered a Fender one, and they sent me the wrong pot! :DB)

    Updated pics.

    BH8-9.jpg

    BH8-10.jpg

    BH8-11.jpg

  6. You can kick it back in a stand to use it as a monitor and mic it at the same time - then as long as you can hear it over your drummer, you should be fine.

    I'd go with the Junior since it has a bigger speaker and I'm not sure the 5W of the Champ600 will get you above drummer level.

  7. Some thoughts on an early Monday morning after I returned from an earth science conference in which much was made of deforestation and carbon emissions (rightfully so). During one session of this conference, lumber use (i.e. logging) got a very bad rap when it came to carbon emissions, because (as is well known) trees remove CO2 from the atmosphere - and add oxygen - as long as they are alive. But I decided to do some research of my own this morning to check their numbers when it came to logging.

    To start:

    Total global forest cover = 3,869,455,000 hectars or 3.87e+13 square meters as of year 2000 (http://www.mongabay.com/general_tables.htm)

    Annual forest growth = 500 grams/square meter on average (http://www.rff.org/documents/RFF-DP-97-37.pdf)

    When multiplied by global forest cover, annual forest growth = 1.94e+16 grams/yr.

    Annual global deforestation = 7,317,000 hectars or 7.32e+10 square meters annually during 1990-2005 (http://rainforests.mongabay.com/deforestation.html)

    Average growing forest density is 800 grams/square meter so:

    Annual global deforestation = 5.85e+14 grams/yr.

    Average annual global lumber harvest = 53 grams/m2 (http://www.rff.org/documents/RFF-DP-97-37.pdf).

    When multiplied by the rate of deforestation we get:

    Annual lumber harvest = 3.88e+12 grams/year.

    This assumes that lumber is harvested uniformly from all areas that are being deforested - so it is probably an overestimate of the amount of timber that is being converted into lumber, because hauling logs from forest to sawmill requires roads (but agricultural deforestation does not).

    OK - (drum roll) - so the annual production of lumber (3.88e+12 grams/year) is 0.66% of the total mass of forest that is being cut down on a yearly basis. And this is probably an overestimate. This means that something like 99% of the world's forests are cleared for agriculture or ranching - meaning, the wood is burned.

    Interestingly, the proportion of forest cleared by logging (estimated above) is at least 10-20X less than estimated by one environmental group (http://rainforests.mongabay.com/0803.htm).

    Burning of wood releases ~1000 kg of CO2 per cubic meter (dry). So for each guitar you make (1-2 board feet per instrument) you keep 3-6 kilograms of CO2 out of the atmosphere (so please do not burn your guitars when you're done with them!).

    Commentary welcome.

  8. As far as glue/wood ratio, there are MILES of difference between even a hardwood butcher block (stripes not squares) and plywood.

    The N-Butcher Block (where N=number of stripes) is probably fine so long as your stripes run the entire length of the body. Endgrain-to-endgrain is the worst and weakest joint ever. But yes - painted it will eventually start to reveal witness lines that will allow you to guess how many pieces are underneath there (my black '93 MIM Strat is 5-piece).

    The Gibson sammys are called "pancake" bodies - I think because they are still 13" wide but just constructed from 4/4 stock instead of 8/4. I don't think they have a centerline glue joint in the mahogany, but I could be wrong.

  9. That can be avoided by rounding over the arm contour in the underlying mahogany, instead of having an abrupt angle right at the glue surface. I managed to do this with 1/4" cocobolo and it worked fine (pre-bent first with water & heat gun over a pine template).

    That's a cool looking bit of padauk.

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