My J-Cut nightmare machine...... one problem after another....

[g29cc]

I bought a J-Cut Router 1212B with dual spindles. Its been sitting in my shop for almost a month + now and does not run.

Numerous problems with it.

Stripped bolt hole threads, damaged castings, rigged up parts because of stripped out holes, parts with one bolt holding them on , just hanging there ( nice since its a limit switch ).

The controller doesn't function as it should and there is a maze of wires that are unmarked with no idea what they go to or where they go without major work to figure that out. The response ? There is no wire schematic. In other words, the reason it doesn't work is because no one knew how to wire it in the first place. Not to mention half of it is not fastened down properly to big with.

Spindle don't spin properly. No axis will move properly. There was supposed to be a A Axis , there is no hook up for that anywhere to be found. Software is pirated versions with crack installs.

Even other customers I have talked to say the same thing. They would not buy another machine. The talk up front is good. But after you pay the money, its nonexistent for support.

I've asked for a wire schematic numerous times and after about 10 emails, was finally told there was no schematic.

Which I read in another thread here the same story ( with J-Cut ) about no wire schematic being available.

How are you supposed to service the machine with out a schematic ?


NO TECH SUPPORT. REPEAT NO TECH SUPPORT.

Everything was all good up until the I paid in full and the machine got here. Than it was a sorry mess after that.

There is NO wire schematic for my machine supposedly. And there are major wiring issues.

I don't believe I got everything I paid for. Heck can't tell the machine won't turn on and operate correctly, because the wiring is wrong someplace.

So I am out the cash, out the major time, my production is majorly delayed and I am going to have to purchase items to make a brand new machine work.


Here are some of the pictures of my machine filled with metal shavings on the linear rails and balls screws, they were NOT cleaned prior to shipping. If I didn't have all these problems I might not have noticed all the metal and would have damaged my rails and screws because of it ( its all hidden behind the way covers ).

Also the pillow block for one of the spindles was stripped and just rotated, redrilled and left cockeyed. Hopefully I can either helicoil the stripped out threads and machine a new block, or I don't know what at this point.













Bottom line, this is a total piece of crap machine. Maybe its worth of a hobbyist who wants to fix his machine more than he wants to use it.

I am not sure what its really good for to be honest. Its definitely not a machine that will last in any type of production type environment where the use is more than a couple hours a week. Its not made durable enough and the components are built to withstand weekly use.

Sad enough a company in the states here replied to an email asking for help

" Is the machine salvageable.... "

I replied back

"Its brand new "

The reply back to that basically that even though its new, its probably junk. Which I don't doubt, but I am trying to save my face by hoping it will at least run after I dump a couple thousand more to make it try and run properly.

I greatly wish I would have just save money and bought a beat up used industrial machine locally and fixed that instead of having this.

Live and learn I guess.

Got questions?

guns@customizedcreationz.com

586.232.3422 Mon- Fri 9am to 5 pm Eastern time.

Todd

[aarggh]

Wow! That's shocking! I've just ordered a machine (6090B) from Jinan J-Cut that's being assembled this week for shipping soon, and hope maybe this is a different seller to the one you guys have dealt with?

I've been dealing with Shanny there over the last week who has been extremely helpful with photos and my many, many requests for more info on the parts and specs. There seems to be a whole district or province with similar names, models, and machines?

The one issue I wasn't happy with I would say is that there is a real lack of info on the web for all these types of Chinese CNC's, as to the hardware and software configuration, and specs, hence my annoying poor Shanny with heaps of emails, but it is good to know the model steppers, drivers, etc, etc. I plan to comprehensively document and photo the entire process and take massive amounts of photos along the way, along with all the machine details, and put them up to help others.

Have there been others with problems too? What were they, and what was the end results?

cheers,
Ian

[g29cc]

I dealt with Shanny as well. She was good with emails answering questions I had in the beginning. But in the end, when I had "real" questions, as in after the machine came, the answers were slower and incomplete. Dodging the question and finally just telling me that they have NO schematic available.

Also I specifically asked if Mach3 could control the spindle. Yes Mach3 can, but without back tracking all the unumbered , unmarked, same color wires, without a schematic. Without a model # on the breakout board. It makes it more difficult to wire it correctly. I was told that the control box they were supplying would be wired to run Mach3, and it wasn't. I was told that the software would control the spindle and that the control box would be wired this way, it was not.

My electrician came out and wired a few things that were wired wrong. Then I hired an CNC Maintenance specialist and he came out and wired the stepper drives correctly. Two of them were wired incorrectly.

From a business standpoint, I have lost thousands $'s with this machine already. Its still not running correctly.

The cooling pump for the spindle was bad. I had to buy another one, which without knowing what GPH it was, I had to buy three and "guess" which one would work.

The steps per that they gave me were incorrect, I have them set at an odd ball number right now which seems to be accurate. But no where near accurate like I thought ( or hoped ) it would be. I am not sure how accurate these machines can be repeatability wise. But I am going to guess its low.

The machine table top is flimsy. Very weak. If you press on it, you can flex the table, .030 easily!

At rapid movement, the whole machine shakes and flexes. Its not very stable. Which really depresses me since I was hoping this machine would move fast while cutting. But I realize, it will probably be slower than my smaller machine I was planning on replacing with this machine.

Bottom line, by the time I upgrade this machine, improve its design and get it operating correctly, I could have bought a used machine that would have been heads and tails above this machine.

If its not to late, I would consider checking out this thread and talk to Larry.

http://www.cnczone.com/forums/chines...t_chinese.html


There are better machines for the price out there, I didn't find them till too late.

Maybe you can save yourself the headaches, that I have and what others that have contacted me with this machine I bought, and the smaller 6090.

Unless you like to tinker and rebuild a brand new machine, your most likely going to spend more time getting it to run correctly than you will running it for awhile.

I wish I would have found out the information about these machines before I spent my hard earned money on one.

Your always welcome to contact me 586.232.3422 Mon-Fri 10 am to 5 pm Eastern time, if you have any questions.

Todd

[aarggh]

I dealt with Shanny as well.
Maybe you can save yourself the headaches, that I have and what others that have contacted me with this machine I bought, and the smaller 6090.

Todd

Hi Todd,

I'm a bit worried now! It's the 6090B with the linear rails that I've ordered, along with the rotary axis (which is not too flash), to be delivered to my door. Have you got some photos you could put up of the underneath of the table, motors, wiring, drivescrews, etc? Basically as much as possible please? I did see the ones in your other post on the shavings and block.

I am finding it amazingly confusing as the photos sent for the same models all seem to be a little different to each other, and there is just no info on the web as to real details and details such as specs, wiring, load, etc.

I did find out the motors are apparently 85BYG-450A, the drivers appear to be 2M542, but beyond that I can't get any info.

cheers,
Ian

[aarggh]

Hi All,

I've been posting photos and info on the JCUT 6090B I ordered as it progresses along it's journey to me! So far my fears have been allayed by others such as Butterknife (and a couple of others who I'd have to search again for their handles), and the info and pics sent from Shanny in China. As I mentioned in my other post at the link below, I don't expect perfection by any means, and fully anticipate some minor adjustments required, but if as it seems the machine itself is smooth in action, robust, and square, that's the major battle won IMHO, and to my mind any leveling required for the spoilboard is trivial. I also have what I think is a perfect fix for the problems mentioned by g29cc regarding the top which I'll be doing regardless anyway when my machine comes as I'd like to strengthen it as much as possible.

Probably the only thing that might need redoing initially is the rotary axis, from the pics it's very hard to tell how square it is, and how accurate the ratio is given you swap the X or Y axis cables to use it.

But apart from when I find out how the customs will hurt, i'm pretty happy and Shanny has been very helpful answering every one of my emails so I can't really complain.

When it comes I'll be taking copious amounts of photos and videos, so any one else considering one of these machiens will have a lot more info to put them in a more informed position than I was when I started looking at these units.

cheers,
Ian

http://www.cnczone.com/forums/chines...t_chinese.html

[g29cc]

Well as luck would have it, more problems have arisen from this machine.

I found more stripped out threads, and now a broken tap in the bed.

I'll post some pictures later.

I can't say enough how disappointed I am with this machine.

I've had two people come out to look at the machine to purchase it at a HUGE discount.

All of them looked it over and didn't even make an offer on it..... how depressing is that!

I am glad some of you guys were able to get your machines working properly without spending too much more money into them.

I guess I am just old school and expect a brand new machine to be.... well brand new and working correctly.

I don't think I should have to fix and modify a machine to make it work, if its brand new.

Oh well I guess. Lesson learned.

Todd

[g29cc]

Still no luck with the machine.

The more I dig into the machine to fix one problem. The more I find other problems.

Headache after headache.

Todd

[viroy]

WOW thats just unbelievable... makes my problems look petty.
I'm willing to help out if you need something milled, looks like you need new stepper mounts. If you have a thread tap, I can mill the aluminum.
Sorry to hear of your troubles!

As long as it has a good frame, lead screws & power supply, maybe you should just upgrade it.
Get a G540 controller and some new, stronger steppers.
There are some well priced, neato proximity sensors to use for limit switches rather than a lever.

[g29cc]

Thank you for the offer. I have a full CNC shop. So fixing this isn't a problem if I wanted to do so. Other than time and material that would need to be purchased and spent to fix a brand new machine.

I really can't say how much of a loss this piece of crap is. From the recycled metal, poor sand castings, poor machine work ( if you want to call it that ), totally poor quality control and customer service.

If you have time to mess around with one of these machines, you might as well have built one yourself. If you want something up and running, then these are definitely NOT the way to go.

The age old adage, you get what you pay for rings in here.......

[viroy]

Yes I also noticed the underside of my work table has some less than perfect sand casting marks.
I attached some aluminum support bars to the top of my gantry today... while filing & sanding I was surprised to find that the gantry is made from 6061 aluminum, not iron like I was expecting :/

[g29cc]

Yes I was disappointed in the casting as well.

Poor quality and cheap materials.

That is one reason why the machines are so cheap.

That is also one reason why I am selling mine to buy a used quality machine. I don't think my machine would last long in a actual shop environment, even if its not constant daily use.

I just wanted a machine to work with. I don't mind putting money into a machine, but not when its brand new and the money I am investing is to just get it to even run.

I totally wish I would have held off and researched this company more than I did. I would have found how many other customers weren't happy with the products and services ( after you pay ).

The whole key to the transaction that should have put a red flag up for me was that the money could only be wire transferred. Which you have no recourse after you send the money. I am just thankful I even got a machine and didn't get ripped off $7000.

Post some pictures of your findings, I am sure they are probably comparable to mine.

Todd

[viroy]

I saw a post recently about Keling having a special on fully assembled CNC's.
Had the timing been right, I would have purchased one of these instead... im less than 200mi from chicago so I would have been eligible for their discount. But I'm sure you can still have it freighted.
CNC Router, Keling Technology Inc, USA