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MendelMax 2.0 review
#1
i made a huge mistake purchasing the mendelmax 2,
i got carried away with the aesthetics and disregarded some fundamental design issues the printer has .
basically i didn't want to buy a printer that looked like a microwave, who could blame me.
first of all i will start with saying that i bought this product with the intention of printing solely ABS.
furthermore my experience with the company has been the most frustrating thing i have ever experienced,i
am putting this out there so no one has to endure the headaches that i have had and continue to have.

issue no. 1
according to their specifications the heated bed should be at 110 degrees Celsius so that the abs adheres to the bed.
the bed cant reach it and was topping out at 106. doesn't matter what you do, so i spent hours frustrated trying to
get a print started, everything was delaminating.
as i am neewbie to 3d printing i did a quick google search, and found that a little acetone mixed with abs would help.
problem solved, sort of. the bed still doesn't go beyond 106.

i addressed the issue with staff, they told me to cover the bottom of the printer with aluminum foil. now it doesn't
take a genius to realise that hot air rises and thats not going to increase the performance, not to mention how idiotic
i would feel about having something that i blew 2k on wrapped in aluminum foil. so it was put back on me, there was no "sorry sir, might be
a faulty heating unit we'll send you one straight away be patient." no i was treated like an idiot, "wrap some foil round it. "

i was impatient to start a print so i did it anyway with no success (what a shock).

issue no. 2
after playing around with the printer attempting to get some good results i started to hear a crackling sound similar
to plastic tape, i stopped the printer looked under the bed, Wow the heating element is completely delaminating from the
aluminum plate is affixed to.

so again i make contact and the response is, "hey go down to autobarn buy some gasket silicone and there Bobs your uncle, problem fixed."
"and i'll give you a ten dollar check to cover the costs." wtf!!!! not only is the heating element starting to burn out due to lack of adhesion.
it's going to take me my time and effort to rectify the problem with your printer. dude i'm not your guinea pig for you
to experiment your product on. in my head im thinking "i am a customer, i bought your piece of crap, rectify it yourself, send me a new one."

issue no. 3
i moved on to printing something larger, they provide a CAD drawing for an LCD box so that you can operate the printer without a computer.
i'm halfway through printing, it is about 3hrs into the print and the bed skips. the weight of the glass bed(570g) plus the weight of the part about 100g lead to
the stepper motor skipping, too much inertia for the little thing.

so once again i send them a msg, which are becoming increasingly aggressive due to the built up frustration. what is the reply?
just reduce the printing acceleration. so hold on, your selling me a product on certain speed performance now i'm meant
lessen it to something completely uninspiring??

anyway just to get it going again, i did just that. but after some thought i am really starting to question the design of the printer.
if you have a glass bed weighing 570g, an aluminum underlay around 100g, then a supporting Y plate and sliders adds an easy 400g.
you are talking 1.1kg of bed being thrust back and forth by a 5mm elastic belt. it doesn't take a rocket scientist to realise that something
has got to give. thats the weight without the actual model that your printing, i was planning to print to the extremities of the printer,
if my model adds another 500g to the equation, the motor and elastic belt are completely under engineered, you'll significantly have
to compromise the acceleration. it's a stupid design to begin with. you have a constant variable: which is the size and weight of the
print. this print is being thrust back and forth on an axis. this isn't controlling variables to the best of ones ability. it's a joke by any designers or
engineers standards.


issue no. 4
this is the one that put the nail in the coffin.i am still trying to print the lcd holder, every so often the model splits.
mainly due to the temperature difference in my room and the temperature above the bed. abs seems to shrink dramatically.

once again i tell them my problem, i am advised to enclose the printer, the guy on the phone say's "i have my printer in a cardboard box,
it's 90 degrees C in there."

so i got my printer and put it in the cupboard (2m squared with some ventilation). i got an electric thermometer so i could read the
temp without having to open the cupboard and compromise the print with cold air. i fire the printer up again, all is good. temperature
is about 37 c constant. 3 hours later i decide to have a sneak peek at the part. F&*^Ck!!! The printer extruder is melted. the printer
has been cutting laps for 2 hours with no filament going in or out. At this point i am fuming, i have had enough of the mediocre advice
from the clowns at Makers tool works. basically i call them a buch of morons, i demand parts to fix it, which include: a new heater, a new
all metal extruder to handle the heat associated, and i also want some reimbursement for being F^&*cked around .

they ignore me, nothing , no "sorry sir, we apologize, we'll do anything to make you happy." I GOT SWEET ____.

i have now escalated this to a paypal claim. they have sent me an email denying me any further support.
Yeah that's the word's they used. if it wasn't for there support i would still have a printer to print with.
they can go to hell, they are trying to cover their ass for the paypal claim that is coming their way.

also i beg to wonder what would have happend to their printer if i put it in a box like the clown on the
phone told me. what then? would all the wiring melt down, one thing for certain all the PLA parts that
it's made of would be shot!

what i have learnt in my short time 3d printing is: 1. all high end professional printers are enclosed,
there is a reason for it, controlling the variables, every hour there are temperature changes. eliminate them
especially when printing with ABS. if an open printer claims that it can print abs i'd love to see it. and when i say print
i mean i want to see a large part with significant wall thickness.

2. do not buy a printer with a bed that travels horizontally, your printing speed is going to be significantly handicapped
as a result of physics. printers that have a bed that only moves vertically and the other two axis are covered by
the head are significantly superior. think about it, the head never gains or looses weight, it's constant, MUCH BETTER.
and much lighter than 1.1kg of bed ,heater, support and sliders not to mention the printed object.

3. Get an all metal head and extruder, it makes sense, you've got 130 degrees or more generated by the head
110 degrees over the bed, add slight enclosure, it not a place for plastics especially not thermoplastics
like the PLA that the Mendelmax 2 is made of.

now that i have done my apprenticeship in 3d printing the wrong way, can someone please suggest
a good product for ABS in 2k-3k price bracket. Also this is a short hand account of what happened
there were other stupid things thrown at me that are just insulting to the brain.
Reply


Messages In This Thread
MendelMax 2.0 review - by johnbro - 07-24-2013, 11:51 AM
RE: MendelMax 2.0 review - by MakersToolWorks - 07-25-2013, 05:12 AM
RE: MendelMax 2.0 review - by jakezilla - 07-25-2013, 07:12 AM
RE: MendelMax 2.0 review - by johnbro - 07-25-2013, 10:29 AM
RE: MendelMax 2.0 review - by jakezilla - 07-26-2013, 02:40 AM
RE: MendelMax 2.0 review - by johnbro - 07-26-2013, 03:27 AM
RE: MendelMax 2.0 review - by johnbro - 07-27-2013, 06:30 AM

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