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Legacy Maverick 3x5 Gen. II #7: Couple Quick Notes

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Blog entry by copythat posted 03-06-2018 07:06 AM 965 reads 0 times favorited 14 comments Add to Favorites Watch
« Part 6: It Lives! Part 7 of Legacy Maverick 3x5 Gen. II series Part 8: Finally cutting wood! »

My Maverick 3×5 came with a portable e-stop switch. I assumed this was an upgrade on the Gen. II since the e-stop on the gantry had been removed. I searched high and low on where to plug in the three pronged plug but I could not locate the receptacle. I finally called Legacy and they told me the switch did not go with my machine; it was for a 4×8. I’m not sure I believe them but OK.

Next, I added 2.5 gallons of antifreeze and 2.5 gallons of water to the spindle coolant reservoir and went to insert the hoses like the instructions indicated. I noticed the hole for the tube that goes into the reservoir is quite a bit bigger than the hose. I could only imagine how much crud would end up in reservoir and, ultimately, in my spindle. I checked my parts stash and found a perfectly sized rubber grommet. I installed it into the top of the reservoir and then pushed the tubing into the reservoir. It all fit like a glove.

-- Rob



14 comments so far

View Notw's profile

Notw

672 posts in 1952 days


#1 posted 03-06-2018 04:59 PM

I’m a little surprised that a machine of this caliber would use a 5 gallon bucket for the coolant tank.

View copythat's profile

copythat

161 posts in 805 days


#2 posted 03-06-2018 05:05 PM



I m a little surprised that a machine of this caliber would use a 5 gallon bucket for the coolant tank.

- Notw

Do you think it should have a built on reservoir? I’m not familiar with what other cost comparable machines use. I did check out an $80,000 Camaster that had a forced air cooled spindle and thought it was a step down. I admit, I think the bucket is cheap looking but it is totally functional.

-- Rob

View Notw's profile

Notw

672 posts in 1952 days


#3 posted 03-06-2018 05:21 PM

I guess it’s just one of those things, they probably couldn’t improve up the simplicity and functionality of the bucket, just looks a bit odd is all

View Dwat's profile

Dwat

24 posts in 308 days


#4 posted 03-16-2018 01:36 PM

Rob,

Give us an update. What is going on whit the new “toy” and what have you made?

Dan

-- -There is no limit to what you can do if you do not care who gets the credit-

View Desert_Woodworker's profile

Desert_Woodworker

1631 posts in 1413 days


#5 posted 03-21-2018 09:56 AM

Your water cooled set up with the grommet looks great- without the grommet I still clean and change to water periodically
Question: here is what I believe and ponder re: the water cooled spindle- How do you know if the water pump is working? While operating the machine you are not allerted by the machine that the pump is not working nor you cannot tell from the water lines- is water flowing! What are your thoughts?

-- Desert_Woodworker

View Desert_Woodworker's profile

Desert_Woodworker

1631 posts in 1413 days


#6 posted 03-21-2018 10:07 AM


I m a little surprised that a machine of this caliber would use a 5 gallon bucket for the coolant tank.

- Notw

Do you think it should have a built on reservoir? I m not familiar with what other cost comparable machines use. I did check out an $80,000 Camaster that had a forced air cooled spindle and thought it was a step down. I admit, I think the bucket is cheap looking but it is totally functional.

- copythat


Water cooled spindle, for me, is the way to go. I recently just completed an individual carving- 23 hours of continuous non stop machining
Question: can an air cooled spindle do this? I would like to know-
H2O

-- Desert_Woodworker

View Mainiac Matt 's profile

Mainiac Matt

8549 posts in 2527 days


#7 posted 03-22-2018 05:52 PM


Water cooled spindle, for me, is the way to go. I recently just completed an individual carving- 23 hours of continuous non stop machining
Question: can an air cooled spindle do this? I would like to know-
H2O
- Desert_Woodworker

Chiming in here with a couple observations… note: I’m not criticizing anyone’s machine, opinion or experience.

We’re on our second CNC at work, a CNT Motion Systems 900 series with a 10 HP spindle, ISO 30 tool holder an 8 position tool changer…. and we just purchased (for a cool $120,000) a Multi-Cam 5000 with a 13 HP HSD spindle, HSK63 tool holder and 12 position rotary tool changer… though we haven’t taken delivery of it yet.

All three of our CNCs have had and will have air cooled spindles. No other option was even presented. And yes, they cut all day, every day.

My understanding and experience (though admittedly limited) is that all industrial duty CNC routers have air cooled spindles. These run up to 24,000 rpm, at high HP continuously for hours on end and the spindles alone cost upwards of $10K. (the ceramic bearings alone cost hundreds of dollars)

From what I’ve seen, air cooled spindles with the same specs always cost more than liquid cooled spindles.

I think liquid cooled spindles are an economical way to put a capable spindle on the market that hobbyist can afford.

Liquid cooled spindles present another system that requires maintenance, tending and could potentially fail. An if the cooling system fails during an extended program (which is when, if it fails, it is likely to do so) it will take the spindle out.

Air cooled is bullet proof… as long as you have air, it’s good to go.

That said, I think Rob’s setup looks very nice and the coolant setup should serve him well. Just put it somewhere when it won’t get knocked over and maybe put some type of sight glass set up in there, to make it easy to keep an eye on the cooling level.

-- I yam what I yam and that's all what I yam

View copythat's profile

copythat

161 posts in 805 days


#8 posted 03-23-2018 12:22 AM

I like how quiet my water cooled spindle is compared to a router. I have no idea what an air cooled spindle sounds like. I guess it doesn’t really matter when my dust collector sounds like a freight train. Hopefully I will get years of use out of my spindle and pump.

-- Rob

View Desert_Woodworker's profile

Desert_Woodworker

1631 posts in 1413 days


#9 posted 03-23-2018 04:02 AM



I like how quiet my water cooled spindle is compared to a router. I have no idea what an air cooled spindle sounds like. I guess it doesn t really matter when my dust collector sounds like a freight train. Hopefully I will get years of use out of my spindle and pump.

- copythat


MM Great insight to this “post” yet “what is level and type of CNC’s do our fellow LJocks have and use? As for “bullet proof” air spindle… a failure is a failure- programming, electrical, tool bit breakage, water pump, life expectancy… Preventative maintenance…. Or …. Rob you have a beautiful Legacy and myself a Laguna IQ- both machines use, a water cooled spindle.
IMO I love the water cooled spindle; I know that my machine can run continuously for a 23 hour run. The spindle and tool bit were only warm and could be touched by hand, after this run.
From the Shop Bot video’ the air cooled spindles require a (? # of minutes) to warm up, before you can start, the run. Water/cooled can start and run….Yet can air spindles run more than 10 hrs continuously? ( within the type machines that were mentioned)
Also, I would be interested to hear – how many hours can a 3hp air cooled spindle run….
Just sayin,
Ps You have a great machine- now lets talk software…..
Your Legacy will do as you tell it to do but are you in command from the “programming” that you input…

-- Desert_Woodworker

View Desert_Woodworker's profile

Desert_Woodworker

1631 posts in 1413 days


#10 posted 03-23-2018 04:07 AM

“That said, I think Rob’s setup looks very nice and the coolant setup should serve him well. Just put it somewhere when it won’t get knocked over and maybe put some type of sight glass set up in there, to make it easy to keep an eye on the cooling level.”
Matt in WWI and WW2 there are stories of soldiers using their “urine” to cool the combat machine guns.
Please Rob just replace to pump…....

-- Desert_Woodworker

View copythat's profile

copythat

161 posts in 805 days


#11 posted 03-23-2018 05:08 AM

In all fairness, Legacy has my Mach 3 software setup to warmup my 3hp water cooled spindle when I first turn on and reference the machine. It may not need it but that is how they set it up and I am ok with it. It only takes a couple minutes and it is done.

Although is was expensive to me, did I mention the Maverick 3×5 only cost $16K? I would imagine the $120K machine is far superior, no matter what type of spindle it is running. However, I think mine will serve me well for a while until I can justify a Maverick 4×8.

-- Rob

View Mainiac Matt 's profile

Mainiac Matt

8549 posts in 2527 days


#12 posted 03-23-2018 04:41 PM


In all fairness, Legacy has my Mach 3 software setup to warmup my 3hp water cooled spindle when I first turn on and reference the machine.
- copythat

I think that is pretty standard for “real spindles”, and we run a warm up routine as part of are homing procedure.

The tolerances are so tight in these super high speed spindles, such that any rapid temp raise can cause the spindle to unevenly heat and the thermal expansion will not be uniform and then when you spin the thing at 25,000 rpm, it can cause imbalance.

-- I yam what I yam and that's all what I yam

View Dwat's profile

Dwat

24 posts in 308 days


#13 posted 03-29-2018 01:24 PM

Rob,
You have probably already figured it out but I was looking through some youtube videos and found this concerning the cut-off switch or EPO, about 8:30 into the 12 minute video. https://www.youtube.com/watch?v=Srn4CG8o4H4

Dan

-- -There is no limit to what you can do if you do not care who gets the credit-

View copythat's profile

copythat

161 posts in 805 days


#14 posted 03-30-2018 03:54 AM



Rob,
You have probably already figured it out but I was looking through some youtube videos and found this concerning the cut-off switch or EPO, about 8:30 into the 12 minute video. https://www.youtube.com/watch?v=Srn4CG8o4H4

Dan

- Dwat


It turns out they sent me a Gen I machine and I paid for a Gen II. I’m not real happy with the company since I asked them about it a couple weeks ago and the salesman simply lied to me.

-- Rob

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