Search found 930 matches

by Dave_C
Mon Jul 02, 2018 3:12 pm
Forum: Home Shop CNC
Topic: Why not to Buy Cheap Jet CNC Mill?
Replies: 12
Views: 350

Re: Why not to Buy Cheap Jet CNC Mill?

In the end it really depends on what the op wants to do. Well said! Not knowing what Steve wants to make, do, create, spend and what not, we can only share what we have done with our machines. And nope, I don't have room for a VMC. (Wish I did, but then I don't really need one nor could I use one t...
by Dave_C
Mon Jul 02, 2018 9:44 am
Forum: Home Shop CNC
Topic: Why not to Buy Cheap Jet CNC Mill?
Replies: 12
Views: 350

Re: Why not to Buy Cheap Jet CNC Mill?

I said earlier I do own one? And a real VMC Well if you own a VMC then that explains why everything else would be less than acceptable to you. Most of us of the "HOME MACHINIST" variety machinist either don't have the room, power supply or funds to own such a machine. But back to Steve's issue of w...
by Dave_C
Mon Jul 02, 2018 8:46 am
Forum: Home Shop CNC
Topic: Why not to Buy Cheap Jet CNC Mill?
Replies: 12
Views: 350

Re: Why not to Buy Cheap Jet CNC Mill?

While they are very versatile manual machines and I think a well equipped shop should have one they just aren’t good for cnc. Really, says they guy who probably does not own one! :roll: 0522181311 (2).jpg They have their draw backs but "IF" you know how to approach them they can produce very good r...
by Dave_C
Mon Jul 02, 2018 7:10 am
Forum: Home Shop CNC
Topic: Why not to Buy Cheap Jet CNC Mill?
Replies: 12
Views: 350

Re: Why not to Buy Cheap Jet CNC Mill?

Steve, You mentioned that you have worked on your Grizzly mill and still have .020" backlash! Well, this is going to be an issue on cheap machines as well as it cost money to eliminate backlash and build an accurate machine. You'll get exactly what you pay for no matter whom you buy from. Light mill...
by Dave_C
Wed Jun 27, 2018 10:33 am
Forum: Home Shop CNC
Topic: Mirroring a part
Replies: 7
Views: 229

Re: Mirroring a part

I've never tried the "Mirror" function on my controller, but I'm curious if the location of the "part zero" comes into play as it does in CAD. Glenn, good point and this was my concern when I started trying to set this all up. In my case, I made the centerline of the stock my "Y" zero and the outer...
by Dave_C
Wed Jun 27, 2018 9:08 am
Forum: Home Shop CNC
Topic: Mirroring a part
Replies: 7
Views: 229

Re: Mirroring a part

Run a test piece in dense foam, or plastic.
Better if a problem occurs.
~RN
I agree! No need in wasting the part or the tool...

Dave C.
by Dave_C
Tue Jun 26, 2018 7:44 pm
Forum: Home Shop CNC
Topic: Mirroring a part
Replies: 7
Views: 229

Re: Mirroring a part

Ok, I don't think cutter comp will be an issue as the path is done in Fusion 360 with the comp set to "computer" instead of doing it in the machine.

There would be no tool changes so this just might work!

Dave C.
by Dave_C
Tue Jun 26, 2018 3:32 pm
Forum: Home Shop CNC
Topic: Mirroring a part
Replies: 7
Views: 229

Mirroring a part

I need some advice on how to use G50/51 (Centroid Mill) I am getting ready to make some knight chess pieces to complete the chess set I started years ago. I have the knight profile all done and I have the CAM complete except for being able to chamfer the back side of the knight. I have my stock for ...
by Dave_C
Sun Jun 24, 2018 1:37 pm
Forum: Milling Machines
Topic: Milling a helix
Replies: 67
Views: 3811

Re: Milling a helix

I find them to be much sharper and provide a much better finish than HSS end mills. I'll have to agree with Glenn, I've gone to all carbide end mills which are all made for specific purposes. 3 flute with special coatings for aluminum and 4 flute and a different coating for steels. I had some .200"...
by Dave_C
Sat Jun 23, 2018 8:03 am
Forum: Welding
Topic: MIG Pulsing issue
Replies: 18
Views: 568

Re: MIG Pulsing issue

Ctwo, I too ran into this exact issue with my "Cheap" Northern Tools MIG. What I found was the wire feed mechanism was not feeding the wire constantly because of a binding problem in the feed path. The little guide that guides the wire into the feed wheels was loose and would slide into the wire fee...
by Dave_C
Wed Jun 20, 2018 2:32 pm
Forum: Milling Machines
Topic: Milling a helix
Replies: 67
Views: 3811

Re: Milling a helix

I purchased enough material to make two worms. I'm hoping I don't need the extra piece.
You'll only need it when you don't order the extra piece! :wink: At least that is how it works for me.

Owesome project, looking forward to seeing the finished product.

Dave C.
by Dave_C
Wed Jun 13, 2018 9:05 am
Forum: Milling Machines
Topic: Milling a helix
Replies: 67
Views: 3811

Re: Milling a helix

Both yield 120 volts to neutral The reason for the "blanked off" spots is that the "Wild Leg" of 208 does not produce 120 volts to ground. So you should not put a single breaker in those slots! Quick way to tell if you have 208 Wye or 240 Delta is to go out and look at the transformers on the pole....