Search found 581 matches

by peter.coombe
Sat Jul 06, 2019 10:23 am
Forum: Instrument Builders Forum
Topic: Stew Mac shipping - warning
Replies: 26
Views: 1118

Re: Stew Mac shipping - warning

All now resolved. TNT delivered the Stew Mac package on Thursday, but it took another prod from me, and they delivered the LMI package yesterday. Phew.
by peter.coombe
Tue Jul 02, 2019 8:37 am
Forum: Instrument Builders Forum
Topic: Stew Mac shipping - warning
Replies: 26
Views: 1118

Re: Stew Mac shipping - warning

Have called FedExp and got them to change the address to my street address. Hopefully it won't be the same nightmare.
by peter.coombe
Tue Jul 02, 2019 8:22 am
Forum: Instrument Builders Forum
Topic: Stew Mac shipping - warning
Replies: 26
Views: 1118

Re: Stew Mac shipping - warning

Ordered a bunch of stuff from LMI on the weekend and just got an email from LMI. They send via FedExp to my PO address. AAAAARRRRGGGHHHH!!!! I must be jinxed. No idea how that happened, I thought it was going via USPS since there was no great hurry for this (just as well!). Have sent an email to LMI...
by peter.coombe
Mon Jul 01, 2019 10:06 am
Forum: Instrument Builders Forum
Topic: Stew Mac shipping - warning
Replies: 26
Views: 1118

Re: Stew Mac shipping - warning

When I last ordered there was no DHL to tick. It just said "International Express", still does the last time I checked (just now), so you don't know how they are going to send it, but I assumed DHL because that is what they have used in the past, and that is what is indicated on their web page. I th...
by peter.coombe
Sat Jun 29, 2019 4:16 pm
Forum: Instrument Builders Forum
Topic: Stew Mac shipping - warning
Replies: 26
Views: 1118

Re: Stew Mac shipping - warning

Very strange reply from Stew Mac. Seems to try to steer you towards FedEx which is not what we want. DHL use Australia Post for remote area delivery (I live in a "remote area"). They after all are owned by Deutche Bundespost so that is no surprise. FedEx use TNT for remote area delivery. I sure know...
by peter.coombe
Thu Jun 27, 2019 8:27 pm
Forum: Instrument Builders Forum
Topic: Stew Mac shipping - warning
Replies: 26
Views: 1118

Re: Stew Mac shipping - warning

I know their web site says express is via DHL, and I assumed they would ship via USPS or DHL, but I was wrong, and that page is wrong. When you check out it tells you nothing, and they will probably then ship via FedExp. They will still ship via DHL, but you need to tell them you want DHL. After my ...
by peter.coombe
Thu Jun 27, 2019 1:40 pm
Forum: Instrument Builders Forum
Topic: Stew Mac shipping - warning
Replies: 26
Views: 1118

Re: Stew Mac shipping - warning

I already complained to Stew Mac and they apologised, but that does not help other people who might unwittingly make the same mistake. They did not change their web site which is where the real problem is. Still no delivery nor any call from TNT.
by peter.coombe
Thu Jun 27, 2019 10:23 am
Forum: Instrument Builders Forum
Topic: Stew Mac shipping - warning
Replies: 26
Views: 1118

Stew Mac shipping - warning

To anyone ordering from Stew Mac please be aware that if you choose express shipping then Stew Mac will send via Fed Express. They used to send via USPS or DHL and I have had no problems in the past with either. However, the last order was urgent so I choose express and it has gone pear shaped becau...
by peter.coombe
Fri Apr 19, 2019 6:47 pm
Forum: Instrument Builders Forum
Topic: More mandolin thoughts
Replies: 12
Views: 1968

Re: More mandolin thoughts

Do you think the shape of the soundhole (oval vs round) has much effect on the resonant freq? No, the surface area of the soundhole, the volume of air in the soundbox, and the stiffness of the top, back and sides determines the main air mode frequency. The shape does not matter. In terms of the oth...
by peter.coombe
Thu Apr 18, 2019 8:59 am
Forum: Instrument Builders Forum
Topic: Wood identification
Replies: 5
Views: 1334

Re: Wood identification

Looks like meranti to me. I don't think it is red cedar.
by peter.coombe
Mon Apr 15, 2019 11:06 am
Forum: Instrument Builders Forum
Topic: More mandolin thoughts
Replies: 12
Views: 1968

Re: More mandolin thoughts

Has been some more progress on this. I have some more data from new mandolins, and I have managed to borrow a couple of instruments from a local customer to measure. Ideally I really need a research grant to make 20 identical mandolins or guitars and vary the tunings. I am suffering from a lock of q...
by peter.coombe
Fri Apr 12, 2019 9:48 am
Forum: Instrument Builders Forum
Topic: Acoustical effect of back woods
Replies: 25
Views: 3254

Re: Acoustical effect of back woods

Thanks Peter, On your first post I had trouble imagining what the control would be. I appreciate your detailed explanations. My understanding from your comments is that without the control, testing with instruments that clearly sound different, we have to assume or be convinced that their methodolo...
by peter.coombe
Wed Apr 10, 2019 8:50 pm
Forum: Instrument Builders Forum
Topic: Acoustical effect of back woods
Replies: 25
Views: 3254

Re: Acoustical effect of back woods

So it’s a bit like saying, in order to see if you can tell the difference between Granny Smiths and red delicious (blindfolded perhaps), then first let’s make sure you can tell the difference between apples and bananas? Yep, something like that. Negative results in science can be tricky. If you rep...
by peter.coombe
Wed Apr 10, 2019 10:15 am
Forum: Instrument Builders Forum
Topic: Acoustical effect of back woods
Replies: 25
Views: 3254

Re: Acoustical effect of back woods

Scientific hat on. When doing scientific experiments there are two questions you need to ask and answer (1) Is what has been observed in the experiment real and not an artefact of the methodology (2) Is it repeatable. A control is used to answer (1), and you repeat the experiment a number of times a...
by peter.coombe
Tue Apr 09, 2019 9:46 am
Forum: Instrument Builders Forum
Topic: Acoustical effect of back woods
Replies: 25
Views: 3254

Re: Acoustical effect of back woods

Yep, Nigel you are right. Rosewood guitars sell, other woods are harder to sell. Hopefully this study and the publicity it has received might start to shift that, but it is like shifting the Titanic with a tinny. I have not had the same problem with mandolins. Australian natives sell just as well as...
by peter.coombe
Sat Apr 06, 2019 9:24 am
Forum: Instrument Builders Forum
Topic: Acoustical effect of back woods
Replies: 25
Views: 3254

Re: Acoustical effect of back woods

Interesting observation. If the guitars did not have active backs then maybe there is little or no difference in sound, as you would expect. However, confining my criticisms to the rating test, which is the main part of the paper, I still believe it to be fundamentally flawed. They get a negative re...
by peter.coombe
Fri Apr 05, 2019 10:27 am
Forum: Instrument Builders Forum
Topic: Acoustical effect of back woods
Replies: 25
Views: 3254

Re: Acoustical effect of back woods

Thanks Trevor. This is the first time I have seen the original article, and a quick read of it has not changed what I have said about the summaries of the paper elsewhere. I still think their methodology is fundamentally flawed. Using a rating system for 6 guitars that sound more or less similar and...
by peter.coombe
Fri Mar 15, 2019 8:59 pm
Forum: Instrument Builders Forum
Topic: More mandolin thoughts
Replies: 12
Views: 1968

Re: More mandolin thoughts

One thought that has occurred to me since the first post - the Lyon and Healy type mandolins that I made have a different bridge from the more recent mandolin of my own design. The bridge is quite a bit lighter. That could explain why the difference is consistently 3.5 semitones rather than 4 semito...
by peter.coombe
Tue Mar 12, 2019 3:00 pm
Forum: Instrument Builders Forum
Topic: More mandolin thoughts
Replies: 12
Views: 1968

Re: More mandolin thoughts

I am happy to have a chat with you at the NFF.
by peter.coombe
Sun Mar 10, 2019 7:35 pm
Forum: Instrument Builders Forum
Topic: More mandolin thoughts
Replies: 12
Views: 1968

Re: More mandolin thoughts

Thank you Graham. I was beginning to wonder if anyone would take any notice, but you did and you nailed it. When I have more data I will write it up properly and submit to the GAL for publication because it is an important finding if correct. That is assuming the new data continues to support my hyp...
by peter.coombe
Thu Mar 07, 2019 9:59 am
Forum: The Gallery
Topic: First Classical
Replies: 8
Views: 1378

Re: First Classical

Thanks, that is good information. In Port Fairy at the moment, and don't have my records, but from memory I think the main air mode came in at between F# and G, and 2.5 semitones between the main top and main back mode. When tapping the bridge before the stings went on there was a really big woof ou...
by peter.coombe
Tue Mar 05, 2019 11:07 pm
Forum: The Gallery
Topic: First Classical
Replies: 8
Views: 1378

Re: First Classical

So kpart, how do you get the weight down on the bridges? Can't remember if I made the top thinner than the plan, half way to Port Fairy at the moment so can't check, but I think I did, the Swiss Spruce was quite stiff along the grain. What I do remember is that the fan braces were really small. What...
by peter.coombe
Tue Mar 05, 2019 10:49 pm
Forum: Instrument Builders Forum
Topic: Port Fairy Folk Festival
Replies: 5
Views: 1158

Re: Port Fairy Folk Festival

Yep, halfway there already.
by peter.coombe
Tue Mar 05, 2019 10:47 pm
Forum: Instrument Builders Forum
Topic: Tapping boards!
Replies: 14
Views: 1647

Re: Tapping boards!

Any music instrument with a wooden box and strings follows the same physical principles. Those principles are outlined in the books. The frequencies will be different for different types of music instruments, but the principles remain the same. Apply the principles and you will most likely end up ma...