This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment How do you "block" these hoses underneath the soundboard? Terry Farrell ----- Original Message -----=20 From: Crashvalve@aol.com=20 To: pianotech@ptg.org=20 Sent: Sunday, October 26, 2003 8:58 AM Subject: Re: Make a soundboard--Measurements In a message dated 10/26/03 8:35:54 AM, mfarrel2@tampabay.rr.com = writes: Hello Glenn. Would you be willing to post a description of the air = actuator again. I don't recall seeing any such thing (I've caught a few = legitimate emails that were filtered out by my spam filter - I've even = seen a few of my own get filtered out!). I would sure appreciate any = such info. Always looking for a way to minimize damage to a soundboard = during removal. =20 Terry Farrell Sure, glad to, and being a newbie to the list I haven't thought to = keep copies. Basically a firestone actuator is a length of reinforced = hose about 3-4 inches wide when flat, 3 foot long, with an NPT thread = tap and metal clip bars on each end. Old firehose is thought unsuitable = for this pressure BTW. I block three of these under the board at spine, belly, and back curve = and connect them in series to a SENSITIVE regulator. The usual air tool = reg. is not fine control enough, diaphragm should be 2 inch or more. = Once set I air up and start another job, jiggering the air up a slow = notch at a time as I pass by the piano. eventually the board pops out. I = really like machine/methods that work while I'm doing something else. If = you do some cutting on the end clips. the profile is 1-1/14 inch and = will slip in the tightest spaces between rib and brace. I'm a longtime = veteran of the industrial auction circuit in Michigan, and lots of = automotive plant OEM stuff comes my way, whence these actuators. If I = was building one the hose would be easy, not so the tap. One of these = blowing out or up could be VERY dangerous to piano and technician alike. = Hope this helps. BTW firestone also makes an air spring (basically a = tire looking like an elephants trunk) and I have seen these incorrectly = referred to as actuators. Accept no substitutes. Glenn C. ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/71/5d/7c/af/attachment.htm ---------------------- multipart/alternative attachment--
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