Jump to content

David Hornett

Members
  • Posts

    215
  • Joined

  • Last visited

About David Hornett

  • Birthday 10/15/1950

Profile Information

  • Gender
    Male
  • Interests
    Varied music genre, playing and listening.
  • Location
    Hobart

Recent Profile Visitors

1,116 profile views

David Hornett's Achievements

Chatty concertinist

Chatty concertinist (4/6)

  1. Well, "lockdown " does strange things to a man. Despite what I posted last year about not making any more 'tines, there I was at the shack, where I'd hidden away for the 6 weeks of Tasmania's lockdown from late March onward, filing reeds for 6 new 'tines, I know, madness. Madness in isolation can be quiet pleasant, the world was mad not I! I got six sets of reeds filed, the gardens nicely civilised, lots of fishing and solitary long walks along deserted beaches and silent forests paths and hours of classical radio; then it finished -- I could go home and reacquaint myself with kitchen duties. Just so happened reed making creates much less mess than violin plate gouging, I could sit at the table for 4 hours each day and admire the view while scraping: see below So now I have three new completed instruments, and three just two weeks off completion. The 'Lockdown model." Two each of A/E; G/D, and C/G, one each of wood and metal ends. My son wags his head in despair, then downright disbelief when telling him about the 31 button 5 inch model I have on the back burner. David
  2. Very sure, I just made both of them. I have made quite a lot of 'tines, but they are c/g and g/d, not a/e David
  3. I would be very interested. All I need is the top row, left and right hand, the 'tinas I make are the common Jeffries tuning. My problem is I am an ear player but have not a clue re. music theory, but I do know what sounds wrong, and the way I have tuned the two A/Es 3rd row is certainly not right. Thank you so much for your offer. David
  4. Hi, Has anyone a A/E three row fingering chart, or a suggestion. I have just completed a couple of A/E concertinas and thought I could work out the third row, but it has proved beyond me, the notes I have there are I suspect not the ones that should be there. All the best David
  5. Hi All, I know I said I was not making any more 'tines, well I almost controlled the urge, so after two violins and a viola, (not as much fun as making concertinas I hasten to add) these seemed to fashion themselves in the workshop. Some roo skin, some and bovine hide. They keep the instrument nicely compressed and sitting on the side, hopefully the valves won't hang down. May you all have a great year, David PS: I did make just one more 'tina: a christmas present. My wife suggests i read a tome about obsession ... . I've no idea what she means.
  6. Dear JS336, I am interested in your layout, but do wonder why you would like the bass to drop to C#2. I note that a standard 96 bass accordion's lowest tremble note is usually F3, a melodeon E3, a G/D concertina G2 (on the ones I have made), and I did make a few extended bass instruments down to F#2/A. Long, and especially weighted bass notes can be a little slow to respond, and in general session playing, unless cording, you would not need them. I did some quick calculations, the layout you have can be fitted into a standard 61/4 box, but the chambers would, according to my calculations, be very restricted, not allowing the extra length for the long bass reeds, which, I have found, can effect tone and rapidity of speaking. The weight of a wooden ended instrument with the extra reeds and buttons/levers/post's would come in at about 1.3kg. But why do you wish to go so low into the bass? All the best, David
  7. It is possible to very quickly mould a small box with a hole in the top to suck or blow through out of balsa wood, or a cut down match box with the sides and ends taped to size. (Use a shim to narrow the box if by chance the distances between the reeds changes with reed size (due to their pitch). The balsa box fits over the removed reed plate with a single reed below, (or with the blow and draw reeds below, but sometimes the valves get in the way if you are not removing them to tune). Blow / suck through the hole and record the pitch, having first recorded it on the instrument. Then adjust the reed. Be sure to clean any moisture from the reeds after breathing on them. Before I meddled with concertinas this is how I used to tune my harmonicas. I have tried twanging reeds when I make them, there is a real art to it, which God did not give me, unfortunately. david
  8. Hi all, Well, below are the last of the line, No's 17 and 18. It took me nearly 5 years and 10 concertinas to get to the point I am satisfied with the end product, and although I have enough parts for a few more, I'm currently in remission from the madness. Only the last 8 were really satisfying -- but what to do with the first 10?? A few weeks ago my son asked for a violin from Tasmanian woods, so that project should keep me busy for a time, especially if I have to make 11 of them to perfect the art! These two are 51/2 inch 31 button G/Ds made from German silver end plates, hand made steel reeds in brass shoes, dovetailed, (unweighted), banksia frames, huon pine reed board and action board, ultem buttons, 1.3 kilos (without German Silver ends they are 1.1 kg) Thank you to everyone who has helped, encouraged and posted comments along the way. A special "Thank You" to Dana, Wolf and Chris Ghent, it is a shame I met Chris only after I'd made the first 4 -- a lot of time would have been saved if we had met earlier. Below is a sound file, on Sound Cloud, but as I am not a concertina player it is only to give an idea of the tone and response. Now off to make the jigs for the violin .... . David David
  9. Hi Seth, I do not know what the angle is on the old concertinas, but I make mine 7 degrees. I set on this angle by placing a Lachenal B2 reed on its side and measuring the angle through filing a piece of wood until it was flush with it, approximating 7 degrees. This was ideal because Dremel produce very small 7 degree router bits, ideal, with some modification in reducing their diameter by grinding the bottom off, for the reed pan slots. Hope this helps. David
  10. Hi Tom, Thank you for replying concerning reduced belly size in transmission of heat, I was very unsure when i made the comment. (But even so i would still use a heat sink just in case.) I was much more sure of phosphor bronze, although I need to explain. 1, I replaced the non-steel reed tongues in a 'brass' reeded Jones concertina with steel a few years back. The replaced reeds were not the yellow of brass, but the more ruddy colour of phosphor bronze which I had become familiar with when repairing high end chromatic harmonicas, Hohner CX 12 (note one Hohner site gives these reeds as 'brass', another as 'phosphor bronze'; they certainly have the latter's colour) 2, A few years ago i also tuned a Lachenal, which had the same ruddy reeds. 3, But, after your above comment i went back through my collection of old reed pans, and yes, to my surprise I found Lachenal reeds which were the ruddy hue of phosphor bronze AND others which were the yellow of brass, and some german silver, so quickly learnt not to generalise. Below I have images of these reeds clipped over a clock spring -- although the colouration did not show as well as I had hoped on the photo, the difference can still be discerned: From left to right: Hornett steel reed, Lachenal German silver, Lachenal brass (alloy shoe), Lachenal 'phosphor bronze', overlaid with Jones 'phosphor bronze' ?? All the best David
  11. Hi Wolf, When heated, non-ferrous metals soften, the temperature for this to happen is dependent on the alloy. In fact, I believe non-ferrous alloys, such as brass, gradually harden at fluctuating low ambient temperatures, and also by working / moving the metal, called work-hardening (such flexing also causes non-ferrous metals to break more easily, e.g., reeds and springs). Copper and brass pipes when submitted to fluctuating ambient temperatures (around engines / water pipes) will become brittle and split, rather than swell, as they would in an unhardened state when first installed. This site may explain this more clearly: http://www.totalmateria.com/Article71.htm So, some ferrous materials can soften if heat is applied, even below what would be the normal tempering heat, and the copper-based ferrous metals conduct heat very rapidly. It is my understanding, but I cannot recall from where this was sourced, that if a length of metal is reduced in size along its length and heated at one end, the reduced section will get hotter than the non-reduced section because more heat is carried through the reduced area. If I am correct in this, the the thin belly area of a reed will get hotter than the reed tip if it is thinner in cubic cross-section than the tip, but I could well be wrong, as I cannot remember the source. But this is why I use a heat sink, just in case. I hesitate to suggest any ideas on voicing. I use the same technique as on steel reeds: hold the middle down and gently raise the end, then take the pressure off the middle and flip the reed to see where it returns to. I am certain though, that others may disagree with this method (I am very interested to hear how other members do it). With 'brass', if the point of natural resistance is passed it is the same as work hardening and there is a good chance the reed will one day break at the point this has occurred. (Other members may be clearer on this, I have always read Dana's contributions with great interest. I studied metallurgy when I was 17, 52 years ago, youth and the passage of time could well have modified reality.) As a point of interest, I purchased a 'brass' reeded Lachenal EC on eBay some years back and no fewer than 4 reeds were broken, only one at the root, the other 3 at the tip. I have never seen a steel reeded instrument in this state. David
  12. Solder weighting: I believe 'brass' reeds are really phosphor bronze. I have tip weighted phosphor bronze reeds with solder, however have always used a heat sink just below the solder point so any excessive hear does not alter the reed's temper. I don't know if a heat sink is necessary, but just play safe. The heat sink is a shim of brass bent back on itself to form a small clip that is interference fitted over the reed tongue just behind the solder point. david
  13. Hi, Ti Grade 2; Stainless steel Grade 316. I can not answer the question about acoustic differences, if any. I use 2mm brass shoes. (These Ti and SS shoes are 1.5 mm) The shoes on display were cut from left over material from pivot posts. The stainless steel ones came about because the laser cutter misread the order and cut 1000 pivot posts from stainless steel, not the requested Ti, hence i got 1000 free stainless steel pivot posts and some stainless steel shoes from left over material. I use the Ti for pivot posts because of its light weight. The problem with the Ti for shoes, which are half the weight of brass, is that Ti work hardens at very low temperatures, and further the laser cutting, because of the heat produced, creates a hardened edge around the cut, and this makes it hard to tap the screw holes without breaking taps, although the laser hardened sides can be filed still. The shoes are still available, really when I said 'make an offer' in the original post I was really only looking for a few dollars more than the cost of freight to cover the bother of packaging and sending them. All the best David
  14. An obsession: The satisfaction of making something, and everything for that something, from scratch! The thinking through and constructing jigs; then deconstructing and making better ones. The constant wonderings if some little aspect can be improved, and it always can -- perfection rests in the mind, not the product. The intrigue of countless theories as to why things are as they are; most being wrong, or on reflection downright asinine -- but at the time seeming golden lights on the road to enlightenment. The experimentation with different materials, techniques and design The people met on the way, builders and players. The final instrument on the shelf (in my case 12, and growing). The ability to compare the first instrument with the last: OH what a difference experience makes. Pursuit of Craftsmanship is a perfection in itself -- joy arising from both the journey and the product. Build one, it does not matter if it is not perfect, the next one will be, or just possibly the one after that ...... . David
×
×
  • Create New...