Andrew's blog

I have an ongoing process of quality improvement and I devote some time and resources for research and development on certain projects. I've enlisted the help of a number of players to do some testing. I need the input of different players to determine if a particular change to a comb design is indeed an improvement that can be measured.

In cases where the improvement is felt across the board, the change becomes part of my standard design.

In some cases, the change is subjective. Some may love it while others may hate it. In that case, I can offer the new feature as an option so that customers can get a truly customized comb, made to order with or without any desired design tweaks.

I recently had some testers compare two combs. Both were identical except for the hole spacing. The Hohner Rocket boasts wider spaced holes and I wanted to provide that experience without making the comb tines too thin.

Wide openings and standard openings

The tines are only thin at the opening and become a normal spaced channel to provide less compressible volume a little further down. This is to improve responsiveness. The hole openings are 40 per cent wider than standard Marine Band comb openings.

Feedback is trickling in and I am considering it carefully.

My next test will involve resonance chambers. I feel the consensus is that thinner combs offer better response because there is a smaller compressible volume between your lips and the reeds. But thicker combs offer a larger resonance chamber and some prefer the tone of a thicker comb. Here is not-too-thick comb with enlarged resonance chamber. The aim of this design is to get the sound of a thick comb with the responsiveness of a thin comb.

Comb with built-in resonance chambers

Comb with standard shaped tines

I will be looking for more testers in the near future. I need to finish getting feedback from the first test as well as tweak the "resonance chamber" design before I call for more testers. Stay tuned!

***Update 2016/05***

I have come to the conclusion that resonance chambers have no real benefit and some drawbacks, namely that they can interefere with the performance of some bends/overbends. The original, classic comb design with straight chambers provides the best, smoothest performance.

Although this doesn't result in any innovation, it does provide some helpful evidence as to what makes a harp play well. I believe this project was time well spent.

Acrylic is horrible on the environment to make in terms of the chemicals that are put into the air but it is sustainable once it is produced. It can be recycled or re-purposed. That being said, my community does not recycle acrylic. It goes into landfill.

So when I stumbled upon a small amount of discarded Plexiglass, I decided to give it a new home. After some tinkering, I found a way to produce some pretty nifty combs and French Tuners!

Once the sides are flat-sanded for air tightness and the tips finished to a smooth matte surface, they look like they are made of ice. Canadian-made ice combs for sale!

I am offering these combs at budget prices. They look terrific, offer quick response and sound great, but they don't offer the same juicy timbre as my Dark combs. They are most certainly a huge upgrade from stock combs and will add some punch to your harps.

If you want a comb that gets the job done at an economical price, this is the comb for you.

Limited quantities available. Click here to order. (Sold out!)

My wife says I look like a clapping seal.

Yes, I do.

This is a quick and easy way to install a flat comb in to a Marine Band harmonica. The stock comb has dimples to make room for the ends of the rivets which hold the reeds. My combs provide more surface area to make an airtight seal with the reed plates and the rivet ends need to be flattened.

This is a harp in the key of G. The end result is a fantastic harmonica that is loud and responsive. I was happy with the instrument but was not satisfied with the 4 overblow due to the shape of the reeds (out-of-the-box profiles).

I spent a few minutes and did some re-shaping of the blow and draw reeds to make them more efficient. It's much more work than just gapping. But the end-result is a 4 blow that is not tight and plays normally with hard pressure as well as a solid - and bendable - 4 overblow.