October 26, 2015 at 7:32 pm #3840
This was a thickness test piece.
Anyone interested in some waterjet motor mounts? I think I will be placing a large order. These take out the flex that the plastic mounts have, and add a little to the cooling of the motor, and they look good.October 26, 2015 at 8:11 pm #3841
Attachments:October 27, 2015 at 8:06 am #3850
What is the thickness your planning for it? I would be interested if it was cut from steel.October 27, 2015 at 8:24 am #3851
This was .085″ and it is better than my 70% infill pla printed mounts. I will be placing an order for the next size up in thickness.
I’m not using steel because I do not want to have to paint them or worry about corrosion.October 28, 2015 at 11:25 am #3888
I may be depending on cost and time frame.
I am was too excited to finish this thing to wait for too longOctober 28, 2015 at 11:40 am #3889
Yeah this is probably a few weeks out, if I can get a good price.October 28, 2015 at 1:42 pm #3891
I am in if they are priced right. Based on the cost of the kit and everything else you do I assume the price will be spot on.November 7, 2015 at 9:25 pm #4072
i’m in if the price is reasonable.November 8, 2015 at 10:02 am #4085
Well its been 2 weeks, I am getting the feeling that 400 of them was too small of a job for them. I’ll send out the quote again to another company. First one I got back wanted $6 each piece, No thank you.November 20, 2015 at 2:37 pm #4293
Make a Water jet Addon!!November 21, 2015 at 10:13 am #4309
What I would give for a waterjet! High pressure pump design *might* be above my pay grade…November 21, 2015 at 2:11 pm #4315
just get one of those harbor freight electric powered pressure washers! Then mount it on the mpcnc and BAM instant water jet!November 24, 2015 at 6:11 am #4334
Can you provide the DXF used to make the cut?
Best RegardsNovember 24, 2015 at 10:37 am #4348
linked in the original postNovember 25, 2015 at 1:26 am #4364
I tried o cut some aluminum, and broken my 2 flute 1.5mm end mill…. need to order another end mill..
When tring to cut, the spindle sometimes start to shake… im using a 400w spindle. Any ideia what is causing this?
Some photos and a video of my CNC
Best RegardsNovember 25, 2015 at 2:44 am #4365
Aluminum is at the upper end of what this machine can do. So you really need to have things dialed in for it to work well. Since I didn’t see it happen it is hard to say what went wrong. Here are some things to try.
If you are using this primarily for milling thin flat material you should make this much shorter. You should also try and get your tool further into your spindle. In the video you sent that material should have been able to be cut in 1 pass very quickly or 2 at the most. The closer you get the cutting end of the bit to the gantry the faster you should be able to cut because of increased rigidity. If you are using this for other things as well as cutting like I am, you should move the material to be cut much closer to the gantry. In that video I made I have a stack of wood under the aluminum. I actually made another and fit 1 more piece of wood under it and was able to cut it faster. Think of it this way, every time you cut the distance from the material to the gantry in half you should be able to cut 2 times faster.
You can move the spindle up in the z direction Ideally you want the bottom of the collet just lower than the bottom of the z tubes to increase rigidity.
You should cut down the z length. When your tool is hitting the work surface your z motor mount should be almost hitting the gantry. If you have more than this you are swinging the mass of the z stepper around unnecessarily.
The 1.5mm bit is very unforgiving even though it is removing less material you might want to get it working well with a 3mm bit first and then figure out how to slow it down for a 1.5mm bit.
You might want to try a lower depth of cut, that puts less torque on the machine. There is a limit though material does have to be removed or you will just work harden it and never cut it.
You can try a coolant as well if your feed rate or spindle speed is off you can actually work harden the aluminum and heat up the bit very fast. to cut without coolant you need to have your feeds and speeds dialed in.
did the spindle slow down when it hit the aluminum? 400W might not be enough power. I believe the dewalt I am using now is 600W, but in my first aluminum videos I was using a 400W flex shaft rotary, and it did fine.November 25, 2015 at 6:32 am #4366
Thanks for all the hints 😉 I will cut the z-axis and try again.December 8, 2015 at 8:37 pm #4761
[email protected] gave me a deal on a few parts for a 3D printer modification. They are in Ontario, California. Turn around time was next day. But I only needed 4 parts.December 10, 2015 at 6:23 pm #4817
Thanks, I will definitely try and get a quote from them thank you!December 12, 2015 at 8:02 pm #4903
I have a company here that i have laser cut alot of small stuff for me. I have to go there to check on machining some turbo stuff this coming friday. Would you like me to ask for a quote with an .STL file dropped off.December 14, 2015 at 4:20 pm #4945
Sorry for the slow response, If you end up going back there I would love a quote. Most places don’t laser cut aluminum though. Usually water jet, sometimes milled. This Christmas season has been so busy I have not had a chance to get any new quotes.
The DXF is linked in the first post.December 16, 2015 at 9:00 am #5031
Will do. The shop i go to has laser cut a bunch of aluminum IAC block offs for me. They will not laser stainless. I will ask them, its usually pretty cheap.
If you see this today could you give me largest dimensions for this piece. i am at work at the moment and our CAD system is set for .ARD files so i cannot open this here. I just need to know length and width. Gonna price it for 1/8″ or .125December 25, 2015 at 7:19 am #5184
i Lasecutted motor mounts from 4mm acrylic, 2x plates are much more stronger than printed so ill need 8mm acrylic.
next week ill check my local hardware stores if they have it then ill cut new plates.
Attachments:December 25, 2015 at 10:52 am #5191
Cut some out of aluminum, I used .085″ and it works really well. It is much more rigid than the printed ones and the stepper that it is on is much cooler than the others.December 25, 2015 at 11:06 am #5193
ill cut those aluminium ones once i get the machine up and running, ill use those acrylic mounts untill i can cut tho out of aluminium.
Only thing is that aluminium plate costs alot where i live so it might take a while.January 1, 2016 at 7:06 pm #5325
Any word on these water jet quotes? Any word on us DIY’ers having success with milling our own. I got a decent handle on this beast with 3d printing and am setting it up to mill next.January 1, 2016 at 10:41 pm #5332
No good quotes yet. If I can catch up and get a little ahead on printed parts I will just mill them myself to sell.
You do have a mill, it would be a good thing to use it for. Just remember to keep the aluminum very close to the gantry and go slow. Go a bit slower than my vid.January 8, 2016 at 1:17 pm #5573
What speed (rpm) did your spindle run at? The power of the spindle sounds more than enough, but most of these motors originally aimed at the woodworker market are too slow to move such a tiny bit through aluminium. A minimum of 15,000, netter 20,000 rpm is necessary. The speed of the cutting edge biting into the material to be cut away is significant. So, a larger mill diameter may be helpful for you.
Above that, did you remove the chippings? They can build up a real wall and get compressed, leading to broken tools. Compressed air and / or a good vacuum cleaner are a must!
Don’t use coolants for VHM tools – they get micro fissures and will crack VHM may get very hot without problems.January 8, 2016 at 3:02 pm #5584
where do you source your aluminum, online or local?January 8, 2016 at 4:01 pm #5588
I got it locally but am not happy with their prices or selection. So I might start looking online.
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