New CNC Mill on the horizon

[Boyan Silyavski]

I like the idea of using a system like this but the worry is still even if we are really over the top at cleaning the machine after its been used for the odd bit of hardwood are we likely to still get a build up of "woodcrete" as I shall refer to it as from now or is it likely to be far less due to there not being flood levels of coolant involved?

Here is a video from yesterday when we were finishing my new machine Z plate. We were going to use fly cutter but at the end decided to get lazy and drink coffee so CNC-ed it on the other mill, as its the back side so it would not be seen. Ignore the dull cutter.

Until sec 15 on the video you could see nothing, but the flow is there just enough to cool it. Then i decided to give more flow so it could be captured on the video.

For the sake of using the camera the nozzle was pointing from right to left and as you could guess cooling the back instead all, whencut was going left-right , but even like that it worked. How i know? We did not break a bit and the cut was good. Ideal is when the flow comes from our point of view, when we are in front of a mill.

Another thing i learned yesterday is that to clamp the goose neck at the dial hole on the mill is good and easy, but best would be a thin collar clamped directly at the lower part of the arbor/??/ , so it moves always with the bit and always cools where necessary.

As you see there is no mess, we were using the bigger 1.5mm nozzle at minimum adjustment. According to Jeff he could cut say 1/3 faster at least and he is using typical HSS cutters/not sharp to my standard / next time i will bring him brand new USA made micro grain carbide cutters that are ultrasharp and polished, so we could see how much we can push that thing. Anyway i soon am finishing my machine so i hope to see what happens with cooling and me taking 16k rpm, deep, fast passes in ali, checking my setup rigidity.

PS. After reading about the pulsing, yesterday had to test how good my setup leans chips. I will make more test and video but the size chips you see on the video, it blows them easily away,without any problem . tested it on the bed where there were mountains of them, 15cm away which is a longer distance than usually. So no worry there, i believe i will have no need for pulsing. Will have to check for steel.