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JeffT

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  1. I finally got around to starting work on the frames. I decided to start building frames starting near the middle, so I started with frame 25.

    As you can see frame 25 is 3 layers, A, B and C, A is the forward layer. A and C are both stepped. I'm not sure what the little bits are at the bottom steps.

    plan.thumb.jpg.ed4478913d11826a0bd53d5c30527b64.jpg

    The instructions would have you start with layer c using shims to prop it up, as shown here with frame 27. This may be necessary for two layers frames when both layers have steps,

    or maybe not, we'll see, but not on the 3 layer frames.

    instr.thumb.jpg.979b9ede9e8fbe2f84201a7954ece983.jpg

    The above method didn't make sense to me. Since the middle layer b is not stepped, I decided to start there. I'm using double sided tape to hold the frame parts in the correct position aligned on the plan.

    There is no glue used on this layer to hold the individual frame parts together, just the tape holds the parts in position.

    bframe.thumb.jpg.931aaee91e4bb952bb816e1d546f86c8.jpg

    There is quite a bit of cleanup to do on the areas where the frames will be joined together. Lots of laser burn and of course the laser cuts at an angle. This is an example of the cleanup that needs to be done,

    The parts wont mate properly until its done. This is the hard part for me, cleaning these surfaces up without making a mess of them. Luckily, this is on layer B and wont be visible after assembly.

    I used mini files for this.

    joint.thumb.jpg.f8c34332dff971bdf0d95b23472153fd.jpg

    I'm using this sander to sand the ends of the parts. Its totally manual, so I have strict control of how much is taken off and making sure the end of the part stays true.

    sander.thumb.jpg.fb22697b5dd0835335d68f1832c8ad9f.jpg

     

    Then I glued layer A on top of layer B.

    aonb.thumb.jpg.b10cfee696fb485cfb0f6ed501e4533c.jpg

    Once that dried, I flipped it over and glued layer C onto the other side of layer B. Some frames will need bevels but not this one. 

    I probably will only do what beveling is necessary to fit the frame into the jig and finish the fairing on the model.

    Frame 25 complete.

    fullframe.thumb.jpg.e269d5201fcc933979a1ed6e456780c8.jpg

    There are 53 frames so a bit of work is left to build all the frames, it took me several hours to do this one.

     

    Thanks for looking.

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