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

[Dan <macaroni9999@xxxxxxxxx>]

Hi Brendan

Thanks. We also have a Makerbot 3d printer in our lab which uses 1.75mm filament.

Do you tap the comb for screw holes?

Daniel

Sent from my iPhone

> On Jun 7, 2015, at 4:41 AM, Brendan Power <bren@xxxxxxxxxxxxxxxxx> wrote:
> 
> Hi Daniel,
>  
> I just realised you CCâd me from Harp-L, so moving this back to the list:
>  
> Mine is an FDM Makerbot-type printer, using 1.75mm ABS filament. The time taken to print a typical 12 hole chromatic comb depends on the setting you use, but for decent quality and detail itâs about 2 hours.
>  
> Brendan
> www.brendan-power.com
> www.YouTube.com/BrendanPowerMusic
>  
> From: Dan [mailto:macaroni9999@xxxxxxxxx] 
> Sent: 06 June 2015 23:07
> To: Brendan Power
> Subject: Re: [Harp-L] Radical 3D Printed Combs for the Hohner 270
>  
> Hello again Brendan
>  
> Just curious. What type of 3d-printer were these combs made on and what was the thickness of the ABS filament. The combs look nice. How long does take to make one?
>  
> Always nice to hear what you are doing with harps!
>  
> Daniel
> 
> Sent from my iPhone
> 
> On Jun 6, 2015, at 8:24 AM, Brendan Power <bren@xxxxxxxxxxxxxxxxx> wrote:
> 
> Hi Daniel,
>  
> They come out of the printer that way, but if you check the pics you will see that the combs get sanded once the reedplates are on:
> http://www.brendan-power.com/harmonicas-combs.php#270
>  
> I show how in this video at 11:00: 
> https://www.youtube.com/watch?v=1d85E4NK18s
>  
> Yes, 260 combs coming shortly J
>  
> Brendan
> www.brendan-power.com
> www.YouTube.com/BrendanPowerMusic
>  
> From: Cal Cal [mailto:macaroni9999@xxxxxxxxx] 
> Sent: 06 June 2015 16:00
> To: Brendan Power
> Cc: harp-l@xxxxxxxxxx
> Subject: Re: [Harp-L] Radical 3D Printed Combs for the Hohner 270
>  
> 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
> 
> 
> 
> 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
> 
> 
> 
> 
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2015.0.5961 / Virus Database: 4355/9956 - Release Date: 06/06/15
> <Comb Fronts Sanded Flush 1.JPG>
> <Comb Fronts Sanded Flush 2.JPG>
> <Comb Fronts Sanded Flush 3.JPG>
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2015.0.5961 / Virus Database: 4355/9961 - Release Date: 06/06/15