Is anyone familier with Dyna CNC?

[EPIK Ltd.]

I have glanced at a majority of the replies in this thread. Most of the complaints regard kits. I will not go into these situations, as none of them relate directly to EPIK, I am not able to comment. Kev's complaint was with the equipping of the machine, out of my hands as well as Dave's. Dave made that right as well as he good, plain and simple. In fact, none of these are my sales, but I am willing to look into what you all want so that I can take care of future clients to the best of my abilities. I thought his anger was settled in March, apparently it was not. Personally I am a ball/servo combo guy and would not buy anything else...I know where he is coming from...but I would have been cured from my hate after Dave made things right.

Dyna is a company that embraces cutting edge technology, that involves taking ANY and ALL feedback into the design of the machines. For that, I must thank you all for pitching in. Negative feedback, regardless of its origins, is what opens the road to perfection. I do not mean to be nosey, but before you all made these drastic modifications, did you guys contact Dyna to see if there was a reason things are the way they are? Forums are great when you can't get help straight from the horse's mouth, but DynaCNC stands behind their products, if you have a problem JUST ASK!

The thing that makes this hard, is that out of all the machines sold, there are only a few unhappy souls. The kits are the same things that get sent out assembled...as well as tested to extreme tolerances. So it is necessary to ask where the problem lies. I am in no way saying that any of the errors are your fault, it would be impossible to know this from my seat. Dave and I were both talking about it last weekend, and I thought he was just kidding when he said that when people hope he can't sleep at night, he wished they knew that he really can't. Look at the times of my replies... it should be obvious that I am no exception to that statement. We are both business owners ourselves, we know how much this stuff hurts. We've been there.

Anyways, I am strongly trying to pressure Dave to quit selling kits altogether if it gives us this sort of a reputation. EPIK will not be selling kits---singlized parts, yes. Kits, NO. I personally refuse to stand behind something I did not fully test. Sorry to break anyone's bubble, and deter any potential clients, but too many individuals rely on the machine to be up and running for my business to take the risks. In fact, EPIK does more than just distribute these fine products, we are consultants, any bad feedback on DynaCNC, is bad feedback on the company as a whole. If I put my whole company on the line for these products, imagine how far I will go to stand behind them. Please take a moment to dwell on that.

Anyways, thanks for the feedback guys. I will pass it on to Dave. Enjoy your Memorial Day, and remember what they gave for us. In comparison, all else is trivial. I hope we can all work this out. It genuinely hurts to know that you are unhappy with the DynaCNC products. If any of you return to the market in need of a machine, pleae be sure to check back in. Your complaints may no longer be an issue, and we want your business. I fully believe that our products can make you successful, and we want you to be. Thank you for your time gentlemen, I will check back in soon. Otherwise, you all have my contact pts.

Thank you

Tyler Shinaberry

[zigzag54]

I'm quite familiar with DyanCNC products & if I had to do it all over again, I'd find another supplier. Reasons why I would suggest another firm? How about poor workmanship & piss poor tech support. When I received my unit there were parts floating around in the control cabinet & wiring that had come free from their cable blocks. They use nylock nuts, a good move (some would say) to curb loose fasteners thru vibration, but if the screws aren't long enough to take advantage of the nylon, what's the use? Tech support is nonexistent. I had a major problem with the THC section they could never figure out. DynaCNC's own Tech Support rep suggested I contact their supplier of the electronics. Had to go to Tom Caudle of CandCNC to get the answer. I can't tell you how many DAYS & DOLLARS I spent, dead in the water, because DynaCNC coudn't get it right. In the industry there's an acronym called CRM (Customer Service Management), in summary it's a method of how to keep customers. Dyna CNC has re-written it to read Customer Service Mismanagement. As you can see from previous emails, Dave Cress has undertaken the job of damage control. I believe that speaks volumes.

[DynaCNC]

Originally Posted by askman I hope that dyna can redesign and fix this kit. overall, this kit has pretty solid base. all they have to do fix the kit is following: 1) isupport the x axis lead screw on both end 2) change out the bronze nut to some form of compensating nut on x and y axis. 3) get a better control on their machining. if they fix these issues, I believe this will be very good kit for the money. if they make a small change to the design, they can even add ballscrew upgrade for substantial more money.

Thank you for your productive comments; To answer your above remarks:

1) We have an option that contains the lead screw on both ends of the "X" axis. It was added a month ago to our fully assembled machines.
2) For the money this is the best long lasting nut we can produce. We have tried other plastic compensating nuts with less success. Backlash compensation can be accomplished simply on Mach3.
3) Also, about a month ago, we purchased a Miyano CNC lathe just for that reason. All of our lead screws and drive shafts are machined to very precise measurments on our cnc lathe as of the beginning of May 2007.
4) We have offered a ballscrew option from the beginning for a very good price. All of our "fully assembled" Table Top Machines with ballscrews run at over 100 ipm.

Considering this chassis is sold as a kit for $1500.00, it is designed to get people off to a good start of owning a small home workshop cnc machine. This same machine with all of the options costs $5300.00 +-, fully assembled at our factory. The chassis kit was designed for the folks bidding on eBay to get a solid chassis they can "add to" and "modify" into a machine they can use for their individual reasons.
I hope this clears up the issues stated above.

[Torchhead]

.....I had a major problem with the THC section they could never figure out. DynaCNC's own Tech Support rep suggested I contact their supplier of the electronics. Had to go to Tom Caudle of CandCNC to get the answer. I can't tell you how many DAYS & DOLLARS I spent, dead in the water, because DynaCNC coudn't get it right.

Ahhh, just what makes me REALLY happy. Helping to get a customer running with their THC and then getting dished for the effort.

You can bet I'll jump through my ass to help you in the future.

Tom Caudle
CandCNC

[cabinetcraft]

Ya know ya get what ya pay for, at work we hammer a Komo vr512 16hrs a day 5 days a week, and it just keeps running and producing parts, week after week, month after month. Its boring. Yep ya get what ya pay for 280k vs 2.8k

[Keskin]

Hmm, i just sent Dyna a price request and if the improvements they made lately have an positive effect, its worth a consideration. Otherwise the offer goes to the made in china files and i will think multiple times before buying one of those because like most of the customers, iam not and i dont want to be a CNC expert/programmer, that`s not what i do for a living so i want a boring machine.
Like many others i`ve been looking for a CNC for month now because for some of us this may be the biggest investment standing in our shops, what i want to say is, that if CNC newbs like me can spend that much time in research, comparisons, learning about parts and what they do, the manufacturers can spend 1-2 weeks testing their products.
The expression "You get what you pay for" is relative, a cheap fridge may be loud, less efficient and last for only 2-3 years but within this time, it should do what it was built for.
So there is no excuse exept for making up for lost money, customers, reputation or time caused by a manufacturer who can`t check his products every now and then.

IMO, the customer is not always right and he`s certainly not king but i like to think about it in a simple and practical way:
An employee gets his money from his employer, from whom does the employee AND the employer get their money? You guessed it.
That doesn`t mean that you have to smile 8 hours a day, in fact you don`t even have to be polite to sell your product but a certain level of competence, tone of voice and patience should be standard, everything above that can be nice but is not a must and everything below that makes the customer feel disposable. Where i come from, they are called "filled up sellers".

[tohlsson]

Be sure to shop around! In my opinion, and experience, there are better American made alternatives in the same price range. My Dyna macine (24"36 almost) now will do what I need it to do , but only after a lot of tweaking, and extra dollars. Be sure to note that due to the use of unsupported rails, mounted too closely, in the x-axis there is a lot of deflection under load. I strongly reccomend a machine with fully supported linear rails!!! Also, the unsupported screw ends in the x and z axis will shorten motor life. The motor manufacturers strongly suggest not to do this because it creates lateral and axial loads that the motors aren't designed for. If Dyna has corrected these design weaknesses, then maybe I'd consider buying another one. But, as it seems, the benchtop machines on their website look to be the same. There seems to be a lot of hypersensitivity to the around their customer service issues, so I'll leave to others to discuss. Although, my experiences were not very positive...

[Keskin]

Thanks for the tips tohlsson, a 1 man manufacturer told and showed me just what you wrote. From what i understand, ball screws alone don`t make sprecise and sturdy machine, some of them get special heat threatment to make them harder, there are different ways in housing the ball screw ends, the rail systems etc...
The machine he showed had all this features and was running for 3 years just with some oiling every now and then, well he wanted 7500,- (38x50 xy) for the stepper version with some software and a mdf plate, no table, no legs, no router, no safety switches no nothing.
Right now i`am looking for a machine with the minimum specs of 38x50 or 49x96 xy and as usual, the price is a major factor when opening a shop.
Thanks to the tons of informations at CNC-Zone, i`am at a point where i have to decide between a smaller one with good quality, a bigger one with the risk of repairing more then producing or a bigger one with good quality but less money reserves for other things that may come up.

Thats one nice balance act between productivity, cost and quality i still have to figure out.
At the moment a good used one seems to fit well into all of the 3 factors.

[DISCONNECTED]

I agree with TOHLSSON'S first sentence.

[Joe Gofort]

I have a dynaCnc kit and have run into the same sort of problems with it. After remachining much of it it and replacing the bronze bearings with plastic it still will only run about 25ips on x and has some very bad vibrations. The bearing mounts on the x axis were machined about 30 thousandths off so I had to make new mounts and put them on the other side of the machine where I assume ball screw mounts would have otherwise have been. The Y axis binds near one end. I'm still fighting with the thing, not exactly sure how to fix the vibration. I'm thinking of mounting bearings on both ends as one of the other posts suggested.

[spursjingles]

Hello everyone, this is my first post. new man. got a question if anyone can answer. Does anyone have documentation from their experience using powermax 1000 regarding metal thickness and speed of cut using Fine cut or standard tips. It would be great help getting these setting for my new machine.