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Cross Section Kit Proto-type |
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Moderators: Winston, aew
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Winston |
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winston![]() ![]() ![]() Registered Member #1 Joined: Sat Jun 13 2009, 02:08pmPosts: 2556 | This build log is a proto-type build for a kit developed here at MSB. Original plans were drawn by MSB member Jeff Staudt back in 2010. There was no initial intent on making this available as a kit, but due to the number of requests we've had over the years a decision was finally made to do just that. This is the collaborative effort of several members here at the site along with outside companies. I will try to list them all eventually throughout the build. Because this is a proto-type, you the viewer may see many changes that occur in a build throughout the proto-typing process. Perhaps it will give you a better understanding and appreciation of why some models cost as much as they do. Its important to note that just because a kit has been developed and available commercially, does not mean that sales of the kit will always pay for itself. Any kit development is a very costly process and in reality a shot in the dark as you have no way of knowing what kit will catch on and what won't. Many hours have gone into this project up to now. First was Mr. Staudts many hours researching and time spent in front of a computer screen to develop the initial drawing. Next was the time spent building a proto-type to confirm his drawings. The following image shows the concept drawing for the original model. ![]() Once the decistion was made to develop a kit the ball got rolling. First the original plans had to be imported into a CAD drawing and laser cutting files developed. This presented its own issues as it was found that not all drawings were up to the quality for being used in laser cutting. They were fine for the scratch builder as they could allow more matieral for their build. Laser cutting isn't as friendly. They were then sent off to the laser cutter. Also in the process while all this was happening (and still happening behind the scenes today) a set of 3D digital drawings are on the drawing board. These will provide to be very unique for those of us in the modeling world. Especailly any old school modelers as theoretically will eliminate the need for print instructions. I will leave discussion on this for others who are more knowledgeable of what the end result will look like. I've seen a preview and have to say I'm quite impressed so far. Recently complted are the guns for the kit. This being a 3/8" = 1' scale model, guns were not readily available. So they have to be developed from scratch. We've had a couple of different versions made. Again, I will leave their description to those involved in that process. (I would like to point out though that although designed for this kit, they will most likely be made available for anyone wishing to develop a 3/8" scale model and need guns at that scale). My part in this process is to put together the model from the laser cut kit to prove the laser cutting. To that end the following kit parts arrived in the mail recently from dlumberyard.com ![]() I'll try to keep you updated on my progress in a timely manner. Work and upcoming holidays wil throw a bit of a delay in the mix but after that it should be clear sailing. [/html] [ Edited Tue Jul 03 2018, 02:49am ] | ||
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donfarr |
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![]() Registered Member #2001 Joined: Fri Dec 23 2011, 09:51pmPosts: 1988 | Wonderfull start Winston, GREAT EXPLANATIONS, very anxious to watch this prototype log. will help GREATLY when I start mine. THANKS FOR ALL THE HARD WORK INVOLVED TO EVERYONE. Don | ||
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Winston |
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winston![]() ![]() ![]() Registered Member #1 Joined: Sat Jun 13 2009, 02:08pmPosts: 2556 | Started with the assembly of the frames. This is the process I used for single frames. I used a piece of 1/2" MDF that I had which was nice and flat and cut it down to the rough shape of the frame and taped the frame template to it. Just as a note of interest, I used this exact piece of MDF in 2010 when I constructed a 1/2" =1' scale version to prove the initial drawings. I just had to cut it down to size. They say everything comes full circle! ![]() ![]() Then I clean up the laser char off the pieces to be glued and test fit them on the pattern. ![]() As can be seen, there is a shortage of about 1/16" on the frame. The quick fix for this would be to extend the top of the first futtock and the bottom of the upper futtock by 1/32" each. Here you can see the shortage and where it occurs. ![]() [/html] ![]() This will not hinder the build process as this is only a proto-type. So the next step was to glue the parts together then fit and glue in the chocks. [/html] ![]() The last image is the completed frame. It just needs some final sanding [/html] ![]() In total there are 17 frames in this model. 12 are single frames as shown above. the other five are double frames. I will tackle one of those in the next post. At the end of the frame construction I'll post a deviation report for each frame where necessary. [/html] | ||
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Winston |
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winston![]() ![]() ![]() Registered Member #1 Joined: Sat Jun 13 2009, 02:08pmPosts: 2556 | This is the laser cutting scheme. I'm putting it here for quick reference. ![]() | ||
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Tim C |
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![]() ![]() Registered Member #4126 Joined: Fri Feb 15 2013, 05:19amPosts: 1113 | Wow, Looking forward to watching this one go on. Thanks for doing it and sharing it. Later Tim | ||
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daves |
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![]() Registered Member #105 Joined: Wed Jul 15 2009, 12:01pmPosts: 3560 | the laser is cutting on the line and has a .012 beam so that is why when the parts are assembled they fall slightly short. this is an easy fix to correct the cutting file however at 3/8 = 1 foot about 1/16 is less than a scale inch. | ||
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daves |
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![]() Registered Member #105 Joined: Wed Jul 15 2009, 12:01pmPosts: 3560 | if I mess around with the cutting file and offset the laser cut that will spread out the area where the chocks fit so to compensate I would need to increase the chock size. or I can remove the cut line at the top of the top timber you can see in the yellow circle and where it was removed shown by the yellow arrow. this will leave the length of the top timber open. What will happen is the builder will need to cut the top timbers out of the sheet and once the frames are assembled the top sheer line will have toi be cut down to size. ![]() | ||
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Winston |
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winston![]() ![]() ![]() Registered Member #1 Joined: Sat Jun 13 2009, 02:08pmPosts: 2556 | I'm not sure you would have to increase the chocks length. They already require considerable stock removal to make them fit. Enough that I'm using my disk sander to remove the stock as it would take to long with a piece of sand paper (what can I say, I'm lazy). I wouldn't go with the second option. Leaves open too much room for making an error. | ||
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Winston |
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winston![]() ![]() ![]() Registered Member #1 Joined: Sat Jun 13 2009, 02:08pmPosts: 2556 | Double frame assembly. Consists of a fore and aft frame. Aft frame was constructed as the single frame above using the template and the fore frame was assembled using the aft frame as the template. ![]() ![]() | ||
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jacknastyface2 |
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![]() Registered Member #5239 Joined: Sat Apr 21 2018, 05:29pmPosts: 823 | Going to watch this! Never done frames with chocks. Being new to MSB, is there no way of watching subsequent additions on this build other than watching "The News" on home page? I might miss it eventually. Keith. | ||
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