Although very similar to the tree in MDF, this entry also has an interest. I wanted to try to machine a useful piece in full MDF, considering the precision machining. So, I can test the new tools that I bought on purpose to cut MDF. As I said in previous posts, working with MDF gives a very wide possibilities for many different types of pieces, so I searched and found the following:
Get 3D on page www.grabcad.com and had to modify it a little. The first climb was: As cuts would have to fit with the thickness of the plate itself, it was important that the correct proportion will be saved, which would not be able change was precisely the thickness of the plate. So it escalates to 3mm thickness. All came mounted on different 3D solids, and I had to separate them with SolidWorks one by one and translate it into a 2D plane. From there the I exported to DWG, Autocad format, mostly because I find it more comfortable to work in the 2D program. I was making blocks, and so I could rebuild all parts
I dispose of MDF panels 3mm thick, so I have to scale all the 3D to a thickness of 3mm plate. After preparing all the pieces at 1:1 and recompose them in Autocad, to occupy the minimum space possible. And we have to import it into Vectric Aspire, machining and programming. I will write a series of tutorials where you will see as programmed in Vectric Aspire these jobs.
Then get to work. I put the board in place, I make sure I have enough material and part zero, I put the tool and ahead:
The machining conditions, after some testing, I found that are optimal as follows:
feed rate 500mm/min
depth of cut: 3mm thick
Tools: two vertical lips Ø3mm
Speed of tool rotation: 20,000 rpm
If you look, the individual parts do not come off because there are small uncut. This can be programmed in Vectric Aspire, very simply, using the “tabs”. The tutorial will explain in more detail. Of course then you have to cut those parts and some sanding … but it is a very simple task. The main advantage is that it will start jumping parts and leak through the tool, and most will not move while the other parts are machined.
In this video you can see how the router does small “jumps” to create these “tabs”:
Once all cut, this is the look. And then join. When you have scaled as corresponds to the thickness of the material, the battlements fall well with some tightening, so that is all very well fitted.
Time to make a piece like this: Programming, 30 min. Machining, about 45min. Sanding and assembly, 15min. Total, that hour and a half we have this model so elaborate. easy
You have at your disposal the DWG file to you so that you make them in the Downloads