Re: [Harp-L] Radical 3D Printed Combs for the Hohner 270

[Cal Cal <macaroni9999@xxxxxxxxx>]

Hi Brendan

Does the relatively grainy surface (compared to wood or a machined acrylic
comb) of most 3D-printed surfaces lead to increased air leaks at the
interface of comb and reed plates or comb and mouthpiece? I am very curious
about the state of the art. Also, will you be making any combs for the 260?

Daniel

On Saturday, June 6, 2015, Brendan Power <bren@xxxxxxxxxxxxxxxxx> wrote:

> The Hohner Chromonica is THE classic chromatic harmonica. Alongside the
> Marine Band 1896, the 270 Chromonica is an iconic model that's remained
> virtually unchanged for over 100 years. Its small size, short-stroke slider
> mechanism and warm tone have an enduring appeal - but often a 270 stops
> working well because of warping and cracking problems with the pearwood
> comb.
>
>
>
> For the first time, I'm bringing the 21st Century maker tech of 3D printing
> to breathe fresh life (literally!) into this venerable classic with my
> radical own-design Power Combs, in two models. 3D printing in stable
> non-absorbent ABS plastic eliminates cracking/warping, and allows the
> inclusion of complex internal chamber shapes to optimise airflow and reduce
> chamber volume, for improved reed response throughout the range. I also
> incorporate screwed reedplate attachment, to allow easy repeated
> disassembly. And it's not all dry and scientific; 3D printing allows me to
> offer lots of bright, cheerful colours to tart up this grand old lady of
> the
> harmonica world!
>
>
>
> I'm offering the combs finished, or in a raw un-sanded state, with
> attachment screws. 270 owners can do the install themselves, by following
> along with a real-time 20 minute video showing how to replace the original
> nailed wood comb with the screwed-on Power Comb. More info and ordering
> here:
>
>
>
> http://brendan-power.com/harmonicas-combs.php#270
>
>
>
> Below is a direct link to the assembly video. Even if you just want improve
> your existing 270 without a new comb, this video gives lots of useful
> technical advice:
>
>
>
> Hohner 270 POWER COMB: Fitting Instructions from Brendan Power
> <https://www.youtube.com/watch?v=1d85E4NK18s>
>
>
>
> For those not confident to do the assembly themselves, I can also supply a
> fully-assembled new 270 with Power Comb.
>
>
>
> Cheers,
>
>
>
> Brendan
>
>  <http://www.brendan-power.com/> www.brendan-power.com
>
>  <http://www.youtube.com/BrendanPowerMusic>
> www.YouTube.com/BrendanPowerMusic
>
>
>
>