Inspired by one of my readers I had a look at the dust shoe for the Kress again. I redesigned it completely and got rid of the additional tubes and clamps. I thought that it would be a good idea to have a highly flexible part between vaccum and CNC. If I had ordered the 20mm silicon tubes it may have worked as well but reducing parts is allways priority.
So in the end we got a pretty classic dust shoe here. It doesn´t have a brush at the bottom as it seems to work pretty good at the moment and I really like to see the endmill. However I included three holes at the bottom for a later brush design.
It works pretty good with lighter materials but GFK, aluminum or similar are not fully sucked up.
It has been printed in 0,3mm draft quality for testing purposes.
It has been released on thingiverse here http://www.thingiverse.com/thing:2119491
|First render of the new tool holder with dust shoe, connected at the bottom. The goal was to stiffen the spindle for aluminum milling and the transition to a more comfortable suction system as I don´t like standing next to it for an hour.
|The clamp itself has already been printed and the vaccuum attachment is on its way. I will see how this turns out and if I need some kind of brush to bridge the gap to the workpiece or if the pure airflow is strong enough to keep the chips and dust under control. The spindle is closer to the gantry and sits firmly clamped by two M4 screws with washers and nylocks.
Sorry for the bad print quality, it is printed in PETG and I didn´t dialed in the parameters carefully as this is a plain mechanical part with no optical ambitions 😛
Those are my preparations for the nex aluminum milling test runs and the upcoming bigger project that might cause lots of dust.