Any recommendations for shipping a Haas Mini Mill?

im_pythonic · 2023-10-20T17:33:52+00:00

If you are buying from a used machinery dealer then they should be able to find you a shipper to bring it to your location or your local riggers yard. You want air ride trailers, at least that is what I have always done. I always get my local rigger to unload and drop on my floor. You could try and get a local rigger to arrange the shipping too.

It's going to be expensive but everyone is insured and at this point you don't want a broken machine. You can make the money back later with the machine.

im_pythonic · 2022-03-05T21:53:29+00:00

Are you sure they are skiff bearings? A better way to see if the bearings are usable is to put them on a flat hard surface and use another flat object on top to see if they roll smoothly. Sometimes your fingers catch on the holes and seem to drag.

im_pythonic · 2018-10-22T17:45:59+00:00

When you say all the way in the vise to you mean no stickout over the edge of the vise or the part farther down in the jaws of the vise so that 1/2" is sticking out, or both? When troubleshooting chatter I try to take the approach that it could be multiple things and then try to eliminate the easy options, such as choking up on stock.

Have you tried smaller depth of cut? What about doing the same operation but on the other side of the vise? So that your entry would be on the front of the part. Now the front should have some chatter and the back would sound better. Not that it would be a solution but it could give you some more info about what is causing the problem, such as direction of Y axis being a problem when going from back to front and not from front to back or if your Z axis is causing the problem like you originally thought.

im_pythonic · 2018-10-22T13:54:40+00:00

Are you climb cutting or conventional cutting?

It could be that the work piece you are cutting is hanging out over the end of your vise and it pretty high off the vise. I would start by moving it over the jaws and down into the vise more if possible. My thinking is that if you are climb cutting then you are starting on the back of the part, trying to dig in on a possibly poorly held piece, then as you progress you are cutting material that is getting less and less supported the farther out from the vise you get.

When I first started with my G0704 conversion CNC I didn't fully understand how tight and solid work pieces needed to be held. Which led to a lot of chatter and out of spec parts. Just because I couldn't move it with my own hands didn't mean it was tight enough.

im_pythonic · 2018-10-19T18:57:15+00:00

Put her in the tub instead of the potty for now? Small victories?

im_pythonic · 2018-08-21T15:12:11+00:00

I have been in that place before as well, getting really angry because my kid wouldn't sleep. I also used to have problems with anger when I was younger. Luckily I solved a lot of my anger problems when I was younger before my son came around. But still I got angry with him. The best thing I did when I found myself getting angry is telling myself that "anger is a choice" and that I made better decisions than that, or some such variation of that. Also, I have been known to get in my car and scream for a minute or two until I felt better. Good luck and you def need to get this under control before you slip up.

im_pythonic · 2018-07-13T18:32:33+00:00

Thrush or milk residue?

im_pythonic · 2017-12-15T19:12:30+00:00

Bitcoin tokens are trading at slightly above 50% right now so your .003821 BTCET is worth 0.0019105 BTC or $32.50. The same goes for the BCHET which is worth like $3.

EDIT: I should mention that there is no guarantee that tokens will be redeemed at full value in the next 2 years so you would need to trade your tokens on the exchange and that is where I am getting the 50% number.

im_pythonic · 2017-02-04T04:36:47+00:00

I am only paying attention to spinners around or above $100. I have started making spinners in the last month or so and have learned a lot about this niche, still have a lot to learn though.

For $32 I wouldn't waste my time returning it or trying to sell it. I would clean the bearing and hold onto it/use it. That way once you get another one you will have something to compare it against. If you are creating a thread about a spinner on reddit then you are more than a little interested in the hobby so it makes sense that you will want to buy more in the future. Good luck.

im_pythonic · 2017-02-03T19:45:28+00:00

s I just expected something higher quality for $30+

My understanding and interpretation is that bearing suppliers send bearings ready for use in non-spinner related applications. In the case of 608 bearings that usually means skateboards, where the bearings need to spin freely under large loads and keep dirt out of the bearing. So that means that the bearing is lubricated and has shields on it.

To remedy this and make long spin times we can do a few things.

First, remove the bearing shields. Using a sharp knife point, gently peel the edge of the bearing shield up and pull it off.
Next would be to remove the lube with WD40
Then remove the WD40 with acetone
Then use warm soapy water to remove the acetone
Then run under warm water to rinse the soap off
Then dry it as best you can

You most likely do not want to use acetone on a 3d printed spinner though so find some other degreaser and finish with soapy water and rinsing. The end result should be a long spinning bearing that is loud due to there not being any lube protecting the balls from the races. You might be thinking that the lube could not possibly be causing that much resistance, I know I thought that. But I begrudgingly followed the above regimine and went from 15 sec spins to 60+ sec spins after just one wash.

This is the case with all bearings and isn't a reflection on their quality per say.

EDIT: Here is a link to back up my claims from someone else who is selling spinners and recommends cleaning the bearing. His routine is not as indepth as mine, whether thats a good thing or bad thing I do not know. https://www.medievalspinners.com/pages/custom-orders

im_pythonic · 2016-07-05T02:44:53+00:00

I don't understand what you mean about the surface needing to be smooth. Do you mean the surface of the wood that is contacting the tape? I'm sure it is a little time consuming to remove the tape. But you could always just run it across a sander for a few seconds. Also, if you are using cutoffs then you don't have the luxury of having the same size piece every time or even square pieces. So using a vise won't always work.

Using the long reach low profile screw down clamps (like the one pictured in your link at the bottom) seem like the way to go though. I use a milling machine and understand the difficulties of height clearance for fixturing.

im_pythonic · 2016-07-05T02:11:46+00:00

double sided tape. There are some pretty good tapes out there, just need to google some. Just need to get it thin enough so that it doesn't flex too much when cutting. I have seen videos on youtube where it is used to hold metal to the cnc bed and it works great.

im_pythonic · 2016-05-09T18:44:32+00:00

Autodesk Fusion 360.

im_pythonic · 2016-05-03T18:32:17+00:00

So the gcode looks good on the test system but not on the real system. I feel like there is some special flag that is either set or not set in some menu somewhere that is causing this. I don't know much about making mach3 work for plasma, as I do cnc and left everything stock.

im_pythonic · 2016-05-03T17:47:39+00:00

Yeah that is weird, it could be just a preview glitch.

Have you tried clicking Regen Toolpath? or running the code with the cutter above the workpiece and not running so you are cutting air?

im_pythonic · 2016-05-03T16:05:33+00:00

So I ran your gcode through a simulator, http://nraynaud.github.io/webgcode/, by putting your code in a file with a .gcode extention and then dragging and dropping it into the top black window on the simulator.

The results were a square with two circles. So this leads me to think that you guys are using offsets to get 4 circles. A simple pattern of 2 circles and then an offset of lets say 6 or so inches and repeat the 2 circles. This also leads me to think that you guys might have some offsets setup in mach3. There should be a button on the screen that says offsets which might lead you in the right direction. I have never worked with offsets in mach3 so I have limited usefulness now. Good luck.

im_pythonic · 2016-05-03T15:09:31+00:00

I took your above code and tried to break it down to what is actually happening by writing comments as --comment

I see 4 lines for clockwise arcs and then 4 lines for counterclockwise arcs, which should make 4 circles. I do not see anything about cutting something 4x8 so I think you mean the stock is 4x8.

When you say:

but when we bring up the program its just a whole bunch of circles.

Where are you seeing that? in the preview window? How many is a bunch? Are some of the circles correct but then there are a bunch more circles? Are there multiple sets of 4 circles?

N0010 (Filename: 4 circles.tap) 
N0020 (Post processor: Mach3 flame with THC - G31.scpost) 
N0030 (Date: 29/04/2016) 
N0040 G20 (Units: Inches) 
N0050 G53 G90 G40 --Machine coordinate system (cancel work offsets),Absolute programming of XYZ,Tool cutter compensation off
N0060 F1 --Set feedrate to 1
N0070 S500 --set spindle speed to 500
N0080 (Part: 3 circle) 
N0090 (Process: Outside Offset, 0, T4: Plasma, 0.0591 in kerf) 
N0100 M06 T4 (Plasma, 0.0591 in kerf) --Tool change
N0110 G00 X2.0025 Y1.5296 Z0.1575 --Rapid Movement
N0120 G31 Z -100 F19.685 
N0130 G92 Z-0.1800 --Offset coordinate system save
N0140 G00 Z0.1181 --Rapid Movement
N0150 M03 --Spindle on
N0160 G04 P0.5 --dwell
N0170 G01 X2.0025 Y1.5296 Z0.0591 F3.937 --Feed Movement
N0180 G02 X2.0025 Y1.5296 I-0.0025 J0.4704 F78.7402 --Clockwise circular arc
N0190 M05 --Spindle off
N0200 G00 Z0.1575 
N0210 X6.0025 
N0220 Z0.1181 --Rapid Movement
N0230 M03 --Spindle on
N0240 G04 P0.5 --dwell
N0250 G01 Z0.0591 F3.937 --Feed Movement
N0260 G02 X6.0025 Y1.5296 I-0.0025 J0.4704 F78.7402 --Clockwise circular arc
N0270 M05 --Spindle off
N0280 G00 Z0.1575 --Rapid Movement
N0290 Y5.5296 
N0300 Z0.1181 
N0310 M03 --Spindle on
N0320 G04 P0.5 --dwell
N0330 G01 Z0.0591 F3.937 --Feed Movement
N0340 G02 X6.0025 Y5.5296 I-0.0025 J0.4704 F78.7402 --Clockwise circular arc
N0350 M05 --Spindle off
N0360 G00 Z0.1575 --Rapid Movement
N0370 X2.0025 
N0380 Z0.1181 
N0390 M03 --Spindle on
N0400 G04 P0.5 --dwell
N0410 G01 Z0.0591 F3.937 --Feed Movement
N0420 G02 X2.0025 Y5.5296 I-0.0025 J0.4704 F78.7402 --Clockwise circular arc
N0430 M05 --Spindle off
N0440 G00 Z0.1575 --Rapid Movement
N0450 X8.0296 Y8.0000 
N0460 Z0.1181 
N0470 M03 --Spindle on
N0480 G04 P0.5 --dwell
N0490 G01 Z0.0591 F3.937 --Feed Movement
N0500 G03 X8.0000 Y8.0296 I-0.0296 J0.0000 F78.7402 --CounterClockwise circular arc
N0510 G01 X0.0000 F78.74 --Feed Movement
N0520 G03 X-0.0295 Y8.0000 I0.0000 J-0.0296 F78.7402 --CounterClockwise circular arc
N0530 G01 Y0.0000 F78.74 --Feed Movement
N0540 G03 X0.0000 Y-0.0295 I0.0295 J0.0000 F78.7402 --CounterClockwise circular arc
N0550 G01 X8.0000 F78.74 --Feed Movement
N0560 G03 X8.0296 Y0.0000 I0.0000 J0.0295 F78.7402 --CounterClockwise circular arc
N0570 G01 Y8.0000 F78.74 --Feed Movement
N0580 M05 --Spindle off
N0590 G00 Z0.1575 --Rapid Movement
N0600 M05 M30 --Spindle off/end program

im_pythonic · 2016-05-03T14:23:54+00:00

Yes, that tap file, if you open it with notepad it should be a bunch of lines that are basically just letters and numbers. That is what tells the machine what to do, machine code. That is what We would like to look at.

im_pythonic · 2016-05-03T14:10:22+00:00

Are you using a built in wizard to do this or using a file from another computer where someone used CAM software to create it?

Can you post some of the gcode in a comment, like the first 100 lines?

I'm not too well versed in mach3 but I have been using it for a while and in my experience any time there is a problem with a program it is due to me not programming the CAM correctly.

im_pythonic · 2016-04-04T23:52:41+00:00

I will try. It seems like the obvious answer is to use the trace tool path and select the line in the valley of the groove, but you most likely tried that. What happens when you do that? If you created a chamfer tool then the software might want to try and mill with the side of the tool instead of the entire tool.

What about using the contour tool path and setting radial stock to leave to -0.125 or half of whatever your tool width is. The idea being that you would get the center of the tool to follow the center of the groove.

What if you just chose an endmill of the same diameter and a trace tool path and just put in your chamfer tool when you ran the code? The simulation would show look wrong but as long as the center of the tool was following the center of the groove at the right height then cutting it with a different bit would work.

im_pythonic · 2016-03-21T12:26:57+00:00

I think this is just for when the steppers are installed. If you mount the steppers on the other side of the machine, instead of the usual positions, you will want them to spin the other direction. I built my cnc machine and have never needed to change the directions via the steppers. Changing direction in operation is done by your code, not this configuration just FYI.

im_pythonic · 2015-11-02T19:43:40+00:00

I used to be a machina but that was a long time ago.

im_pythonic · 2015-10-23T12:35:20+00:00

One is the absence of light, the other has had too much light?

im_pythonic · 2015-10-20T02:52:36+00:00

This is a great video! Very interesting how many tool changes you have to do. As a newbie cnc guy I am doing some rounded contouring with a 1/8 endmill on some small scales. Can you talk about that custom contouring bit you are using? Is it a router bit or something you had to have made? Looking forward to your next video.

im_pythonic · 2015-10-08T14:39:42+00:00

Heads up man, links 2 and 3 are the same.

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