DIY fipple design question

Whistle
1

I’m running a project for my daughters’ brownie troop in which I shall have them “make” slide whistles. The make is in inverted commas because they will assemble them from parts I have made with very basic adaptation of plumbing pipe.

Having done the ground work I am feeling more adventurous and when time allows would like to experiment in real whistle making. However what I have made so far will only produce a sound when the tube is closed (which is fine for the slide whistle project). I am assuming that I will have to be far more accurate in my mouth piece construction for an open whistle. Are there any resources that discuss this aspect of whistle making?

Ian Lawther

2

Does this help?
The ‘Low-Tech’ Whistle: How to Make a PVC Whistle

3

Closed ended pipes are more forgiving than open ended.

  1. You might try filing the underside of the ramp.
  2. File a better chamfer of the windway floor.
  3. Block to ramp distance might be too far. (or too short)
  4. A diagonal scratch in the windway is causing the air to spill to side of the ramp

Do you have pictures?

For a slide whistle, the moveable plug could have a leak.