Re: [RCSE] Using cheap hair spray
I've been using cheap hair spray for years. I especially like using it on all my paper pattern. It's best to do this after your patterns have been pasted down to your pattern material. The spraying of the patterns should be done before cutting your patterns. The spray really helps protects your patterns long after they have been pasted up. One another thing, be sure to write all your notes on your patterns before spraying them. I suggest using two to three very light coats of spray making sure each coat has thoroughly dried before applying the following coat, and then lightly kiss your patterns with 600 sand paper. This will assure you'll have great patterns than will last! Krs - Original Message - From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Wednesday, December 08, 2004 7:34 AM Subject: [RCSE] Re: Question for Modelers Familiar w/Shellac Jim - I haven't used shellac to do this, but I have achieved some pretty light finishes. I use hair spray for the initial coats. Get the cheapest large aerosal cans you can find. Fog a few sparse coats on, sanding very lightly with 400 grit between coats. You only need to knock down the stickups. If you keep the initial coats light and let them dry well you won't hurt a foam wing, and the weight buildup will be minimal. After you get the wood sealed with hairspray go ahead with the waterborn poly. I like to wipe it on with an old t shirt or a foam brush, keeping the coats thin and many. happy trails - Roob Glover As a woodworker I haven=B9t used but read about shellac as the sealer/under coat for wood finishes. Shellac is accepted as a good barrier against wate= r vapor, but not liquid water, and any finish will stick to it well. So I thought it might be a very good under or only coat for balsa tail parts on HLG=B9s etc. Don Stackhouse of DJ Aerotech describes the use of water born (not a solvent in this case) polyurethane and that care must be taken to ge= t a very thin first & later coats. One reason for that would be the fact tha= t wood so readily absorbs water then changing it=B9s dimensions due to swelling of the wood fibers. Don's main goal seems to be to limit weight added though. Have any of you tried shellac, which uses alcohol as its solvent? I am wondering if a 3 pound cut, for example, would penetrate less than a 1 poun= d cut. [Shellac is mixed as x pounds of flakes to 1 gallon of alcohol. N.B. you must use de-waxed shellac if you intend to over coat it with any other finish.] --=20 Jim Holliman -- Tulsa, Oklahoma RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Digital Scales
I have used many scales while working in test laboratories. My all around preference is the old standard Ohaus 2610 g Triple Balance Beam Scale. They're extremely accurate, and with a inexpensive set of calibration weight set, you can easily maintain your scale accuracy with no problems. I am able to mix as little resin as 10 grams of material, and yet stay within the tolerances of my epoxy mixing ratios. Generally speaking, your inexpensive digital scales can easily be off by several percentages. That may not be a major concern when mixing resins that require 20 % by weight on an ounce or more of material, but mixing smaller amounts of material, especially materials that require a harden at 7 % by weight, that's when you begin to run into difficulties. The majority of the modelers seldom calibrate their scales, and for the most part you may not experience any noticeable problems if you don't calibrate your scale. However, if you are really concerned about having the exact mixing ratios, and want to insure you have the optimum strength, you may want to consider investing in a scale that will give you the proper accuracies! You can buy a good used triple beam scale for as little as $ 15.00, or near new for about $ 35.00. I have a habit of checking my scale calibration nearly once before using it. I've made three standard weights. My weights range form 10, 30. and 50 grams. If you're really serious about your calibration, you can buy an inexpensive calibration weight sets for about $12.00 I use my three normal standard weights regularly, because that's my normal mixing range. All triple beam scale are quick and easy to make tare any adjustments. Every time you place any mixing cup on your scale, you automatically see the tare weight zero out. I also suggest spraying a very light mist of WD-40 on your plate, this helps prevent from epoxy build-ups, but be careful, not to over spray with the WD-40. Heavy spraying of WD-40 could affect your scale calibration. It's also best to periodically wipe your scale down with good old reliable isopropyl rubbing alcohol, or even Windex window cleaner. I suggest Checking out E-bay. They always have triple beam scales for scale. When you buying any scale iy's best to clean it, light lube it as required, and always double calibrate the first usage of any scale, whether it's new or a used scale before ever using it! I hope all that read this, found some useful information. Keith
[RCSE] Who going to model this Sailplane The LARGEST IN THE WORLD
Tony Elliott, did mention last month while he was attending the Visalia scale event that he modeling the Eta, but he didn't give a completion date. I wonder why he was a little reluctant to project a completion date? He plans to return to Visalia this coming March to with his SB-10. KRS - Original Message - From: "Albert Wedworth" <[EMAIL PROTECTED]> To: "Tony Elliott" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Thursday, December 06, 2001 9:03 AM Subject: [RCSE] Who going to model this Sailplane The LARGEST IN THE WORLD > Hi Guys > Check this out. > I need one! > http://www.eta-aircraft.de/en/news/ > Looks like a job for Tony Elliott, ya think? > Cheers. > AL > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
