Beiträge von Xiaohu Wang

    Hi Samuel, the sound of the laser cut pipe seems to be fine, I will find time to record and give the frequency spectrum if possible. the air block needs further modification, I will try a new disign later on.

    Meanwhile,I would like to ask have you made any sound comparision with / without the glue coating on the pipe inside? I think surely the glue would make the inner surface very smooth, but it would spend a lot of glue as well!


    Meanwhile, some update on the keyboard skin, it is indeed quite time comsuming on the manual.

    Dear organ friends, some update on the organ pipes, I have made upto 20 pipes now, the small pipes on the right are the test pipes I made previously.

    I also tried a new way of preparing the material for the pipes, is by laser cutting, I made one pipe and it sounds better than expected.


    The upper labrium I made seperately by hand cutting and milling a small piece of plywood, to replace the glued triangles.

    Looking forward to your comments, Best, Xiaohu

    Thank you Samuel for the information. I am going to dedicate more efforts to make the keyboard as perfect as possible. I am planning to either use Teak wood with cow bone on top, or still using ebony with cow bone on top. boxwood is also not very expensive in China, probably I will try that also.

    But right now, I think I am continue working on the wooden pipe and the windchest. Best regards, Xiaohu

    Dear organ friends,

    Some updates on the keyboard, I contacted a local workshop to carve the keys using the engraving machine, still there is more work to be done such as polishing and fine tuning, but already quite happy.

    The white keys I use beach wood as key body. And the key covers I use "Purple Sandalwood" translated from Chinese, I think it is a type of ebony, the thickness is 2mm. Is it too thick for the key cover?

    Meanwhile, I don't know what material to choose for the minor and sharp keys. Any suggestions?

    Best, Xiaohu


    Hello Samuel, this post is indeed very impressive and helpful! one question is about the labium edge thickness, I used to make it as sharp as possible but after having the opportunity to inspect some "real" wood pipe I found the labium edge is quite thick, what are the differences in sound considering the edge thickness ? it would be interesting to do various experiments to check the sound.

    Another thing is the height of the labium edge to the air outlet slit, I think the lower the height would yield relatively large sound? and I guess that the lower the height would suppress the first order harmonic and increase the 2nd order harmonic. Best regards, Xiaohu

    That was just my guess that your wood might be too fibrous to be finished smoothly. As for the wood, spruce is common because of its light weight, and for the smaller stops, hardwood such as oak or pear. As long as you have a wood that can be worked smoothly, the weight is more important. In any case, look that the wood is well dry and grown straight! The pipes should be coated with glue on the inside in any case, because wood is more porous than you think and a bad sounding pipe can also be due to this.

    Viele Grüße! 许多问候!

    Samuel

    Dear Samuel,

    Could I ask what type of paint should be paint inside and outside the pipe? I learnt from the internet using Polyurethane is a choice,and how about wood wax oil? Vielen dank für eure hilfe.

    Xiaohu

    Wow this is very impressive of the housemade organ presented in the youtube link. I always wish to have a clavichord in the future, but to ship to where I am in China is a bit difficult, hope your instrument find a good buyer soon. And could I ask what is like to build a clavichord than an organ? Best, Xiaohu

    Some progress on making the first stop pipe, a c3 pipe for the 4 foot stop. I glue the three sides and the mouth piece, the rest of the cover board i didn't glue to give space for fine tuning. luckily it works when using my hand to block the back, I have not make the stopper yet. The wood I use is birch wood and I find it is quite soft and easy to work with. Looking forward to your comments and advice.

    Best, Xiaohu

    Hello my organ building friends,


    Much thank you to all your kindness support during the process of drawings, I asked a lot of questions and I really appreciate your generous help.

    After finishing the CAD drawings of the chest organ based on Mr. Koele's composition No.5, kistorgels.nl

    I'm finally starting to build it. I don't have a workshop for my own, therefore, most of the work I decided to allocate to a local wooden workshop or via the online store of taobao.com .

    I start with the channel of the windchest, send the cad drawing to an online laser cutting store, they only offer maximum 1cm thick of plywood. So I give it a try with an overall cost of 11 euros. Here is what it looks like, the overall width is 87cm.




    The width of individual channel spans from 13mm (lower notes) to 7mm, and channel spacing is also 7mm.

    One way to increase the height of the channel is to laser cut two board and glue them together? I wonder if it works, looking forward to hearing your comments. Thanks and regards!

    Xiaohu

    Hi Sam, thank you so much for your kind response.

    From my intuition, the air jet is very much related to the hole opening at the sound board and the pallet, I somehow can not understand why it is related to the height of the channel or the volume of the channel.


    "In the worst case of a flat wind chest, a chord in the right hand suddenly becomes deeper when the left hand plays a larger pipe that takes more wind."

    I think it might relate to the volume of the bellow, that a sunden outlet of wind results a drop in pressure.


    My reference of windchest building mainly comes from Koele's website, kistorgels.nl and nippocast youtube channel and part of the Boersma's book can be previewed online it is really quite helpful already.

    Thanks again for your helpful advice and comments. Xiaohu