ponydevil
October 19, 2017, 8:07am
21
forcerouge:
Pretty much the same dust shoe system I made back in the days, great minds think alike ! here: https://www.v1engineering.com/forum/topic/my-mpcnc-made-in-china/page/2/#post-29795 I tried using one single vacuum hose, but as it turns out it seems to work way better with one on each side of the spindle. It leaves almost no dust or chips at all this way, but it needs some kind of manifold to join both tubes into one. Like you say, it would be better to make the top transparent, even if it is more a psychological thing than an actually useful thing. I planned to do that, but got a bit lazy. Also, I would suggest you to go for smooth rods instead of threaded rods for supports, it is way faster to set up and it won’t actually move after being tightened. Another last remark: try to make it as low as possible to maximize the suction power. Yours seems to be about 4-5cm high, which will make vacuuming of big chips difficult. The problem here is that you want it to suck whatever is under the dust shoe, no matter what, otherwise they may partially lift and get stuck between the shoe and the board you are cutting. Let’s say you are cutting a 20mm hole in a straight cut, after the hole is created, you’ll end up having the middle part of it becoming loose (you usually don’t want holding tabs on small cuts because it impacts the finishing quality), a little cylinder of about 15mm diameter. You absolutely need it to be sucked fast, otherwise it will lift partially and the dust shoe will collide with it. It happened to me on the first version I made, which was a bit too high. I got rid of this issue after reducing the height of the shoe. Just my two cents ?
Maby is just me but 20mm cut I will just pocket to be safe. Smooth rood are oke but not for the price better to use them to build another 3D printer ( I know I’m cheap buster) I have quite nice tolerance so threaded rod are going easy up and down until I tight them. I use M10. Dubel suction is of corse much better but again it give more coplication to design that somthing can cache on them and grap. Few test that I make with my home vacuum cleaner show me excellent results. As far as brush is 5 cm almost shoe behind the brush is only 2 cm over material I have planty suction power.
ponydevil
October 19, 2017, 8:08am
22
All scad will be availed soon. Need to make more test if evrything is calculating correct.
That’s what the “In-Progress” checkbox is for on Thingiverse! I built my own here . Thoughts?
dethray
February 17, 2018, 11:32am
24
Any updates to this project? Very interested in putting together a dust shoe and this one seems the most promising. Thanks.