Thanks, merci.
CNC Machining of Composite Wood at 1:65 Scale
- Thread starter ShipmodelIdeas
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Hi Paul,A tip...if you post these images 'full size' rather than 'thumbnail' then your fans can take a closer look (or maybe that's what you were trying to avoid).
I finally have full-sized pictures of the finished walls in the Cabin.
You can check them out in my thread here. And yes, the pictures are truly "full size" now.
Santa Maria 1:65 based on Amati kit
Hello everyone, I wanted to share my progress on the Santa Maria 1:65 ship model that I've been building for a few months now. Initially, I started with an Amati kit, thinking it would be an "easytobuild" straightforward project lasting only a couple of months. However, after obtaining books by...
shipsofscale.com
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Today I tried a new endmill on sheet brass.
The goal was to mill out a trial element of the fence. As a fixture, I used a traditional "woodworking" method - two layers of sticky tape with CA glue in between. With sheet metal and on such a small scale, it shouldn't have worked at all. However, the endmill cut through almost everything. And the detail remained in place almost the entire time. Only at the very end did the part begin to come off the adhesive tape, and I stopped the program.
The results can be seen in the photos. The brass thickness is 0.5 mm, and the width of the fence's spoke is 0.75 mm.
Of course, when I make the actual part, I will glue it with CA to an aluminum plate (and the plate will already be somehow fixed on a table).
This method even works with very thick metal.
The goal was to mill out a trial element of the fence. As a fixture, I used a traditional "woodworking" method - two layers of sticky tape with CA glue in between. With sheet metal and on such a small scale, it shouldn't have worked at all. However, the endmill cut through almost everything. And the detail remained in place almost the entire time. Only at the very end did the part begin to come off the adhesive tape, and I stopped the program.
The results can be seen in the photos. The brass thickness is 0.5 mm, and the width of the fence's spoke is 0.75 mm.
Of course, when I make the actual part, I will glue it with CA to an aluminum plate (and the plate will already be somehow fixed on a table).
This method even works with very thick metal.
Super quality result - Bravo
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Finally, I have returned to composite (layered) wood CNC machining!
I have machined two side panels for my Santa Maria admiral's cabin.
After my first experiment, which was only partially successful, I made certain adjustments to the technology.
1) After several attempts, I realized that the accurate application of glue makes the material rather rigid, eliminating the necessity for a 3-layer sandwich. Two layers would work fine, and I even tried with just one layer!
Since these side panels will be applied on top of the final planking, I wanted the panel's thickness to be minimal. Additionally, I aimed to create an illusion that the arcs are empty, revealing the "original" cabin wall planks. To achieve this effect, I had to make precise cuts within the arcs, ensuring that the layer of walnut planks would be visible but not completely cut through.
Therefore, I have developed the following concept:
2. It became evident that the layers had to be completely flat and parallel to each other and to the surface of the wasteboard. Therefore, I spent more time flattening the surfaces. In fact, I flattened all of them
Here is the process:
1) I glued pearwood planks together. Unfortunately, I do not have a belt saw, so I am limited to the maximum width of planks I can make with my Byrnes saw - 20-21 mm (about 0.8 in) wide. Therefore, to have a wider board, I am forced to glue several planks together."
2) Then I flattened both sides of this board with CNC.
3) Then I added a layer of walnut planks. Additionally, since the two side panels are mirror symmetrical, I had to keep this in mind and maintain the respective angles of the plank layout on each half of the stock... And also flattened that layer with the CNC.
4) Of course, before undertaking all that, I designed the shape of a side panel in Fusion 360.
I aimed for a balance between simplicity and complexity. So, after some consideration, I arrived at this final design:
5) Now, onto the most intriguing part - the machining process. If all calculations have been done correctly, I should achieve the desired result. However, if any mistakes were made, half a day's worth of stock preparation will go to waste! With bated breath, I pressed the start button of the program, hoping for the best outcome.
And luck smiled upon me this time
:
And here is the result. The final maximum thickness of the detail is 1.29 mm (about 0.051 in)!
I have machined two side panels for my Santa Maria admiral's cabin.
After my first experiment, which was only partially successful, I made certain adjustments to the technology.
1) After several attempts, I realized that the accurate application of glue makes the material rather rigid, eliminating the necessity for a 3-layer sandwich. Two layers would work fine, and I even tried with just one layer!
Since these side panels will be applied on top of the final planking, I wanted the panel's thickness to be minimal. Additionally, I aimed to create an illusion that the arcs are empty, revealing the "original" cabin wall planks. To achieve this effect, I had to make precise cuts within the arcs, ensuring that the layer of walnut planks would be visible but not completely cut through.
Therefore, I have developed the following concept:
2. It became evident that the layers had to be completely flat and parallel to each other and to the surface of the wasteboard. Therefore, I spent more time flattening the surfaces. In fact, I flattened all of them
Here is the process:
1) I glued pearwood planks together. Unfortunately, I do not have a belt saw, so I am limited to the maximum width of planks I can make with my Byrnes saw - 20-21 mm (about 0.8 in) wide. Therefore, to have a wider board, I am forced to glue several planks together."
2) Then I flattened both sides of this board with CNC.
3) Then I added a layer of walnut planks. Additionally, since the two side panels are mirror symmetrical, I had to keep this in mind and maintain the respective angles of the plank layout on each half of the stock... And also flattened that layer with the CNC.
4) Of course, before undertaking all that, I designed the shape of a side panel in Fusion 360.
I aimed for a balance between simplicity and complexity. So, after some consideration, I arrived at this final design:
5) Now, onto the most intriguing part - the machining process. If all calculations have been done correctly, I should achieve the desired result. However, if any mistakes were made, half a day's worth of stock preparation will go to waste! With bated breath, I pressed the start button of the program, hoping for the best outcome.
And luck smiled upon me this time
:And here is the result. The final maximum thickness of the detail is 1.29 mm (about 0.051 in)!
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The result is just wonderful - it is amazing
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Surprisingly I like it too, and maybe will not even bother with improving itThe result is just wonderful - it is amazing
AMAZING!
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Thank you
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thank you!wonderful work, it is looks amazing
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Today I CNC-made parts that are usually made by laser or photo-etched. Compared to photo etching, the details are more accurate. Of course, a laser would be better. But there would certainly be a lot of smoke
Now, the question always arises - how best to secure the part. In this case, the vise and clamps are not very suitable - the part is too thin.
That's why I use the traditional method. I glue the brass plate (from which I will cut out the details) to the waste aluminum plate (in this case, 2 mm thick). I use cyanoacrylate. And this assembly is then glued to the waste table. I use duct tape and cyanoacrylate, but double-sided tape will work too.
In general, if you are not too tight-fisted and don't place the parts too tightly on the plate, the part does not come off during processing.
Now, the question always arises - how best to secure the part. In this case, the vise and clamps are not very suitable - the part is too thin.
That's why I use the traditional method. I glue the brass plate (from which I will cut out the details) to the waste aluminum plate (in this case, 2 mm thick). I use cyanoacrylate. And this assembly is then glued to the waste table. I use duct tape and cyanoacrylate, but double-sided tape will work too.
In general, if you are not too tight-fisted and don't place the parts too tightly on the plate, the part does not come off during processing.
What type of mills are you using to cut the brass? In particular I mean are you using multiple tools. One for small details and another for cutting the shape out? Also was wondering what the thickness of the brass is.
BTW, Thanks for posting some really great ideas here.
BTW, Thanks for posting some really great ideas here.
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Brass is 0.4 mm thick.
For this part I used 2 tools - to make indentations I used 60 degr engraving mill, for holes and counter cuts - 1mm 2 flutes flat endmill. Here they are:
