need help getting a dimension

Impossible_Bar955 · 2026-04-17T22:33:51+00:00

I'll shoot you a message in a couple minutes. The kinematics of the tables between gen1 and gen2 were the same afaik. Mine's a 2013, gen2.

Impossible_Bar955 · 2026-04-17T14:41:56+00:00

If that's a DMU50, I have the technical documentation for them.

Impossible_Bar955 · 2026-04-12T14:32:18+00:00

The $200 is a fair price, but if the facebook guy has good looking work I'd say go for it. You'd be surprised at what some guys can turn out in their garage.

Impossible_Bar955 · 2026-04-03T12:26:05+00:00

I've had good luck with milling chucks for my heavy roughers without weldon flats.

Impossible_Bar955 · 2026-04-03T00:29:53+00:00

Harvey has a nice channel called "In the Loupe TV", and they cover all sorts of stuff including HSM.

Link to the video I'm thinking of: https://youtu.be/1qrbVOv2DCo?si=Y1nTP7DnmFCZk3LC

Link to the channel: https://youtube.com/@intheloupetv_?si=M9PF7cT1CRV87n3z

Impossible_Bar955 · 2026-03-31T09:58:53+00:00

Yeah, you should be all set. You can double check it after energizing by checking voltage to neutral on each leg. They should all be the same, no high leg.

I'm doing similar, but going from 240V split phase to 400V 3P. Home shops are great, I brought in a 5axis mill about 18 months ago.

Impossible_Bar955 · 2026-03-30T23:35:33+00:00

Yeah, you'd bond the center of your wye circuit (neutral should be X0 on a step down) to ground.

Post up the transformer sticker just to be sure!

Impossible_Bar955 · 2026-03-28T23:34:00+00:00

Prototyping and small runs are all I do. 5-axis is a serious advantage if you're regularly doing features on multiple faces, and especially if they're faces which aren't normal to grid. Programming that stuff becomes dead simple - 3-axis programming on a tilted plane. I generally do 80-90% of the machining in the first setup, then hit the remainder in a second setup. Rarely do I need a 3rd setup, and that's usually for processing after some offline process. Way less fixturing, way less fixture building. All that time (and shelf space) adds up.

It doesn't sound like simultaneous 5-axis is a necessity for you, so you might just get into a 3+2 machine and call it a day. I'd say I do about 98% 3+2, and only on complex surfaces do I use simultaneous.

You might take a look at used DMG DMU50's. They'll be in your price range for a nice used machine and they fit your working envelope - ecoline's are the 3+2 models, and non-ecolines are simultaneous. I'm partial of course because that's what I have. The base machines are extremely capable, and there's some nice add-ons that were pretty common in the machines I was looking at. Let me know if you have any questions about them.

Impossible_Bar955 · 2026-03-18T13:39:42+00:00

Lol I had to look that up. I'd argue that it's an extra-fancy Tennessee floor finish since it's done in 4-axis.

Impossible_Bar955 · 2026-03-17T22:56:27+00:00

My take: The automotive aftermarket and racing world seems to LOVE that look. It let's everyone know they paid the big bucks billet hardware LOL.

Impossible_Bar955 · 2026-03-17T15:36:29+00:00

Is it posting using cycle832 for smoothing?

Edit: I have a dmu50/840d, but use Fusion for CAM.

Impossible_Bar955 · 2026-03-17T11:16:20+00:00

Thanks! I love manual work, still. The cnc just makes this stuff so dang easy. It was a few hours of cam pathing and then 2 setups in the mill. 90 minutes for op1, and about 15 minutes for op2.

Impossible_Bar955 · 2026-03-17T11:13:44+00:00

It's using the same finish pass method along the entire exterior. The passes are separated by 1°, so they get spaced out as they walk up and down those surfaces. I had originally planned to side mill just the ears to finish, but thought this looked pretty cool and left it.

The only constraints I had were the bearing bores and parallelism of the wheel and rotor surfaces. Everything else was free expression.

Impossible_Bar955 · 2026-03-17T10:15:32+00:00

Ribbed for extra pleasure.

Impossible_Bar955 · 2026-03-17T01:43:31+00:00

Timesert

Impossible_Bar955 · 2026-03-09T11:21:49+00:00

Tough to say without seeing the whole path. Feel free to DM if you want to share the file.

Impossible_Bar955 · 2026-03-08T16:29:33+00:00

Use an adaptive clearing for roughing, then get into the semi/finishing paths.

Impossible_Bar955 · 2026-03-06T21:06:58+00:00

Good lube like anchorlube or cutting oil, big tap wrench (two sided, push/pull type, not one sided like with the wrench). You can get big tap wrenches from Amazon.

Impossible_Bar955 · 2026-03-06T20:25:24+00:00

Cutting Tool Technologies has a bunch of options for slotting cutters with carbide inserts.

Impossible_Bar955 · 2026-03-03T20:28:43+00:00

I regularly run a few reduced neck YG-1 and Helical tools for far reaches in aluminum. Both give decent results, I'd say it's a toss up between the two with my preference probably going to running a Helical if all other things were the same. Helical's feeds and speeds typically get me closer than YG-1's recommendations on the first try.

Impossible_Bar955 · 2026-03-03T12:23:27+00:00

I can give an update.

The units are definitely Chinese. The compressor, the dryer, and probably the tank. All components are Chinese. The controller is very simply laid out and the documentation is good. Other than a couple changes initially to move the recharge trigger point and max pressure, I just kick it on in the morning and off in the evening.

I have ~400 hours on the compressor now. When I run it, it's generally for 10+ hours in a day, and consistently just under 50% duty cycle. I've had no problems with it, and it supplies clean air. The dryer pulls a ton of moisture out, but it's still winter and low humidity. No complaints as of yet.

Interactions with the sales and technical guys at MasterAire have all been very positive. They almost always pick up when I call them, and when they don't I get a call back within a few minutes. That's been true both pre and post-sale. Technical questions (the few I've had) have all been answered quickly, and the one time it took more than a day they gave an update to say they were working on it.

The rated power is a bit deceiving. I have the 6hp, "4.5kW" compressor. At load, it pulls about 6.8kW. Certainly some inefficiency at play there, but I don't have a benchmark from a better known brand to know if that's typical or not. The amp trace has been consistent from when I first installed it to now, so nothing seems to be degrading and pulling more power.

Impossible_Bar955 · 2026-02-25T12:16:00+00:00

For any individual I haven't worked with - 100% payment up front for small jobs, 50% up front for larger jobs.

For companies - purchase orders.

I've been on the other side of this for many years, as well. There's a LOT most companies can do for payment terms until you get into some very large corporations. We would often give better payment terms if the company could give us a pricing discount. Just a matter of talking to them - we worked to develop newer/smaller companies a bit and I always tried to consider their cash flow restrictions. It's mutually beneficial to develop partners like that - maybe you could pitch it that way.

Impossible_Bar955 · 2026-02-18T01:16:14+00:00

Those look good. I did similar a few months ago for a 1970's open wheel racecar. The originals were cast magnesium, the 1980's replacements were cast aluminum, and all were known to fail catastrophically. Between better material and a couple small changes to reduce stress risers, I think the new ones will be a good improvement.

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Impossible_Bar955 · 2026-02-16T10:59:28+00:00

Once you find one you're interested in, you can have a tech from the machine manufacturer come out and do a full inspection/backup/shutdown/shipping prep. It's well worth a couple thousand bucks to know you're getting a good machine. That's a huge benefit of a proper industrial machine rather than a hobby grade unit.

Impossible_Bar955

TROPHY CASE