Newbie looking at 6040 (China CNC) for polypropylene 15mm sheet

[Clive S]

Well you can't make a square hole with a round bit, so if you need it more square use a smaller bit.

[Neale]

Well you can't make a square hole with a round bit, so if you need it more square use a smaller bit.

...or overcut into the corners and have a bezel to hide it!

[JOGARA]

Well you can't make a square hole with a round bit, so if you need it more square use a smaller bit.

That is why I step down to a 2mm bit.
All the holes are different in that I tried different things with them.

The middle one worked the best as the buttons are not fully square themselves.

[Boyan Silyavski]

Maybe its wiser and easier to drill the corners first. Then pocket with the bigger bit.

[JOGARA]

Not perfect but I think I have got it down pretty well.

I don't have a 3D probe yet so whenever I reset the machine I am obvious out somewhat.
The last operation of cutting out the case was well out for some reason..





I am working now on setting up a spoil board underneath the stock to then super glue my stock to.
This means I am not cutting out something floating in mid air.

Just another bit of aluminum stock will do that I can then glue my work stock onto with super glue?

[JOGARA]

Well superglue worked really well.
Surprised how quickly the two bits stuck together as soon as I got the air out of the gap.
Much better than cutting in the air.






Main problem atm is the water.
Thinking of building a dedicated table for the machine which is basically a drip tray that I can then have doors on each side and all the stuff bellow like the controller, spindle cooling res, cooling water etc.
Means I can flood cool too. Which will be quieter than using the air compressor.

Thoughts?

[Boyan Silyavski]

We are cutting steel on mills with mist so not to use coolant and you are going backwards. Cooling with liquid is nice for a production setup but for home? The less, the better. Mist is better for home. Do it properly as i have made it and there will be no problem. With one nozzle you can cool up to 25mm bits.

[JOGARA]

Thinking about it you are right.

Going to make a bed for the CNC that can hold the water that comes off the mist.
I actually had the bottle about a meter above the cnc the other day and just the water alone worked fine by the looks of it.
No air just gravity fed water.



Anyone tried these?
https://www.shop-apt.co.uk/corner-ro...ide-45hrc.html

There are 2 Flute ones but only in the US from the looks of it.
I need to put a nice round edge on my product housing and these look to be the only thing available.

[JOGARA]

Thinking about it you are right.

Going to make a bed for the CNC that can hold the water that comes off the mist.
I actually had the bottle about a meter above the cnc the other day and just the water alone worked fine by the looks of it.
No air just gravity fed water.



Anyone tried these?
https://www.shop-apt.co.uk/corner-ro...ide-45hrc.html

There are 2 Flute ones but only in the US from the looks of it.
I need to put a nice round edge on my product housing and these look to be the only thing available.