July 7, 2018 at 4:29 pm #63183
Firstly, a major thank you to Ryan for this awesome shared project. I am in the process of gathering as much info as possible to make one with these dimensions 600mm x 900mm and a very small 100 – 150mm Z axis. one one thread i have read about supporting midway along the Y & Z axis. One member had some very cool supports. Have any been drawn or is it a case of DIY?
Would this be suitable for the controller board,
Having built several 3d printers I have some experience of using these…..
As a newbie, I am receptive to any advise.
If anyone is here in the uk and would care to share experience /help, please contact me.
Wishing you all a very happy CNC time
StuartJuly 7, 2018 at 4:47 pm #63185
What are you going to use it for (primarily)?
I would suggest you start smaller, especially if you haven’t done CNC before. It’s a relatively cheap process to make it bigger (longer pipes, more belts, more wires). The expensive thing is changing the size of the pipes (outside diameter) or buying new steel pipes, but the first set is cheaper.
Who knows? Maybe you’ll decide to build a small low rider instead of a large MPCNC after you get started.July 7, 2018 at 5:23 pm #63186
Thank you for the reply,
My Main use would be to produce RC aircraft and Jet parts, wing ribs, formers, bulheads etc
along with Multirotor parts.July 7, 2018 at 5:39 pm #63187
Thanks for the kind words.
I am with Jeff on this one, 150mm is nowhere near “small” for a Z, that is more along the lines of, Jumbo.July 7, 2018 at 5:40 pm #63189
Ok. What kind of material would you use? Foam? Thin wood? Balsa wood?
Is it 3D carving or through cutting?
Sounds like fun. I hope you post your builds here. I know there is a pretty active group of rc enthusiast on the flighttest forums using a needle cutter on the MPCNC.July 7, 2018 at 5:54 pm #63191
I think it will all be through and no carving at all. Mainly 2mm – 5mm balsa, light ply and ply.
from what i have read, this machint should cope very well.
Can you suggest a small Z axis move? 100mm?
regardsJuly 7, 2018 at 6:03 pm #63192
This maybe of interest,
I 3d printed a cloned DJI Inspire.
1 user thanked author for this post.July 7, 2018 at 6:07 pm #63194
75mm or less is awesome, 100 is a bit excessive.
Think of it this way, if you plan on cutting 5mm max you only need 10mm, so 25 or 50 is more than enough. Changing the size is way easier than learning on a large machine…July 7, 2018 at 6:21 pm #63195
That is a slick clone. They want some serious money for those things.
You’ll fit right in here. Welcome!July 7, 2018 at 6:42 pm #63196
Thank you all for the kind words of advise and welcome.
it is just before 3am here in the UK, so I’m hitting the pillow. Also we have the GB Grand Prix later today.
regardsJuly 8, 2018 at 4:32 pm #63231
im looking at using Stainless Steel 25.4mm OD tubes. i have found two versions!. seamless or welded?
any advice pleaseJuly 8, 2018 at 6:51 pm #63241
BarryParticipantJuly 9, 2018 at 6:08 am #63275
is wall thickness of 1.5mm and above, say 2mm suitable?
Also, I have spent most of the day trying to find seamless, 25.4mm stainless steel tubing.
I have been quoted anything up too $200 for 6 meters…… criminally costly here
cheersJuly 10, 2018 at 4:52 pm #63378
I have had a very busy day researching where to purchase the items needed to make this project MPCNC.
Here is my findings and purchases. After much searching, I ended up buying Stainless Steel 25.4mm with a 1.63mm wall thickness. I couldn’t find seamless and so had to settle for seamed. From what I have read, if I put the seams opposite to the bearings all should be ok, I opted for precut tubing and this was for an extra few £’s
I picked up a 710 watt Palm router 6 & 9mm collets and I also found an MKS integrated 1.4 ramps board with a 3.2 touchscreen. I then upgraded the stepper drivers to DRV8825.
The power supply is a 12v 6A 80w regulated power supply with built in fan.
I purchased all nuts and bolts as a package from a UK supplier along with 5x NEMA 17 stepper motors with 84 oz.in torque.
All the above and two reels of PLA for my printer, 1x Black & 1x yellow for what i think is an amazingly good find price of £243 inc VAT and delivery.
So I think a well worth day and I hope you agree a worth while use of my timeJuly 11, 2018 at 2:55 pm #63422
Welcome to the forums.
I am from the UK my MPCNC is 900mm x 1100mm with a Z of about 100mm, although I only ever need a bit clearance of 25mm so a Z of around 50mm would be enough for me.
I went for the really cheap option of Galvanised 25mm OD tubes with a 1.6mm wall, think these were £7 or £8 for 3.5 meter lengths, so far no issues with them.
For me the biggest issue with my MPCNC was printing the parts with a cheap stock A8 printer, so I had some issues with the alignment of my Z gantry as half my dimensions were out, its still not great and my Z axis does miss steps from time to time because of alignment issues in the screw, which I will fix at some point.
DJuly 11, 2018 at 3:12 pm #63424
Firstly thank you for the kind greeting. I am in Cambridgshire for the record. I have finally just finished ordering the components and went for stainless steel tubing,
I have just started printing the parts. to begin with i have only printed one foot. with a 25.4mm hole for the tube. from what i read the advice was to measure the tubing before going too far. Luckily I have a Da Vinci Printer which I have greatly modified and is dialed in very well. when i did a test of a 100mm cybe it was on average 0.015mm out.
if you need help printing parts let me know and ill put them on the list lol, I am going for a colour scheme of Black and Yellow. Not as bid as your but still i think a decent size ay 900 x 600.
hope to hear from you soon
regardsJuly 13, 2018 at 11:43 am #63594
I must say the postman as never been so busy. I have received the SS tubing today, very precisely cut lengths, millimetre perfect. they were packed very well. when unpacked I decided to check the trueness and found two of the long lengths had a 1mm bow in the middle. Not being disheartened, I called a close friend and have arranged to have them all tested and straightened, He as a lathe that can take the tubing length, he will then spin them and measure the run out. After detecting the error he will manipulate and true them. I have also decided that I will drew and print some custom adjustable supports for mid way of the X & Y axis.
I have also received the power brick, most of the nuts and bolts. My chosen router and the bearings.
Printing is coming along nicely and the fit to the tube is perfect, a nice sliding fit and only a small amount of pressure to seat the tubes.
Well Progress is being made. I wont start the build until I know I have everything ready and is to a standard the best I can manage.
cheersJuly 14, 2018 at 10:16 am #63707
Well did I speak too early or Did I speak to early LOL
left the printer running over night and woke this morning to find the god of 3D printing had left me an error, the dreaded Heater Decoupled Warning. After some investigation, found that the heater wire was partially broken and so as the carriage moved around it intermittently disconnected. Resoldered , tested and on with the printing.
regardsJuly 15, 2018 at 1:13 pm #63777
good progress today with printing Black parts until I ran out of black Filament. Not to be deterred, I switched to yellow and on we go.
Another praise to Ryan for these parts go together so precisely and smoothly, I have only had to run a drill through the holes to make sure their clear.
Attachments:July 16, 2018 at 9:52 am #63859
Also from the UK, Manchester. a bit late to your thread, looks like you have everything in hand.
I used the deta pipe from screw fix 25mm od.
I have yet to finish my build as life keeps getting in the way.
My corners have cracked so I need to reprint those. My anet a8 is a bit out of whack at the moment after moving it from my house to my detached office/garage space.
tried printing petg recently to build nese 8p 18650 modules for a friends ebike and haven’t cracked that yet. PLA is so much easier it seams. Its a mixture of wrong temperature, insufficient cooling at the hotend, enclosure is keeping the ambient temps too hot and if I don’t use the enclosure I will have layer delamination as I’m printing in a concrete garage through the night which gets cold.
Anyway I wish you good luck with your build.
regards AndyJuly 16, 2018 at 10:07 am #63864
Thank you for your comments. Spooky, I also looked at the screwfix conduit you used but eventually whet for Stainless Steel
i also had the company cut them to my stated sizes for just a few £’s
Today, I have almost finished printing the parts that I have filament for. I am really pleased with the results.
I use a highly modified XYZ Da Vinci 1.0 which as had the hotend changed to an E3D v6, the firmware software changed to repetier and hotend cooling upgraded. Stock it struggled to print PLA and occassionally ABS, but now I can throw any kind of filament at it and with slight tinkering it prints. I started out on Repetier Host but now predominantly use Simplify3d for almost every part I print.
My original intention was to have all the printed parts finished before I moved onto construction, but last night while wasting time in the office re-reading over the assembly instructions, I got excited and ended up installed most of the bearings. I really do like the way Ryan as drawn the parts and clearly as taken time and a great deal of effort to produce for the members a great looking and hopefully easy using CNC.
“Andy” if you want to talk or need any help with parts, let me know and if I have time I maybe able to help.
Attachments:July 17, 2018 at 6:47 am #63912
yeah I might well take you up on that. I have a v3d clone on my anet a8 but I must do better cooling on the hot end. I bought some borosilicate glass and some spare parts to refurbish my hotend as its seen some abuse of late. I also need to devise some feedback loop based thermostatic control to get the air ambient temp right in my lack enclosure. It looks nothing like the ones on thingverse. Its very ghetto and has cardboard sides.
Any glad to have made your acquaintance. I am jealous of your shiny rails.July 17, 2018 at 7:39 am #63914
Thank you for your reply, I certainly understand what you have been going through. I got into 3D printing totally by accident. I had a weeks holiday while the wife was still working. Doing my usual browsing of eBay I cam across a velleman K8200 for sale, it looked interesting and so I contacted the seller and collected it later the same day. Once home, it was constructed within a couple of days. Then the build part of my brain got stimulated and I started researching 3D printing. That’s when I replaced the heated bed glass with borosilicate and the hot end with a E3D V6, that made the printer run much cleaner, then I built an enclosure for it
The Velleman K8200 on the Left, XYZ Da Vinci on the right
I then purchased a used Da Vinci again off eBay for just over £100, from my previous research I changed the stock firmware for Repetier and again an E3D v6 was installed. So now it prints literally any Filament.
Attachments:July 17, 2018 at 8:29 am #63917
Its funny how I imagine lots of these machine will languish in people homes after an impulse purchase but people who have the time nor the temperament to get them working well. before I put mine in the external office (think concrete modular garage with a nice floor and corrugated metal roof) it was printing pla with a near 0% fail rate. now ive got it outside and am trying to master printing with petg (of a particularly tricky 18650 nese 8p module) im struggling to get the desired quality. I shall revisit this when I have received my “bang”goods. And can get this thing working all day and all night as I planned. I think also I will use my router to mill hdpe and get into recycling milk bottles as much as is possible. hopefully it will be less messy than woodchips. (and I can melt down the waste again into more raw material)July 17, 2018 at 11:40 am #63930
Totally agree, I think the majority of people who go for the 3d printing technology believe it is just a case of install software, connect and print. I feel they are so misguided as 3d printing is a black art. What would work for me will usually never work for others.
I have read on so many forums questions asking for settings, I usually add to them that any settings should be used as a guide and not a cure. I also find that during the summer, I need to leave the top of my printer open, while during the winter, I must have the top closed but the door left at slightly ajar.
In the beginning I went through so much filament. Fortunately I kept notes and eventually could see trends building up.
This afternoon, I have drawn an X, Y axis tube support
These will be placed mid way between corner mounts. After reading many threads, it seems a support like these should aid in some improvements in accuracy.
Also finally the penny dropped with the series wiring for the stepper motors, I took an old stepper motor and multimeter. Identified the connectors and can see the light. YAY!
Attachments:July 17, 2018 at 2:50 pm #63957
And another hello from the uk,Winchester hampshire.
I run an A8 and a Chinese 3040 CNC.
I found a pic of the mpcnc in google images and joined the forum.
What pushed me on was the number of parts I already had under the bench:
5 x nema 17 steppers
2560 arduino with ramps board and drivers A4988– not sure about them,If I have problems I will order some drv8825 ones instead.
400w chinese spindle with pwm controller
5m of belt and a handful of gt2 16t pullies
From the above you can see why I had to go for it !!!
I am half way through printing the parts on the A8 with a .4 nozzle at .15 height.
Pipe is the 25mm conduit from Skrewfix that measures 25mm to 25.1mm
all cut and ready to go.
I have ordered a 48v 7.5a 360w power supply for the spindle and a 12v 6amp supply for the board.
Edit: I am building 24 x 24 or 600 x 600 for us in the uk.July 17, 2018 at 3:08 pm #63964
Firstly welcome to the forum and my thread, I am fairly new to all this but the printing is almost complete, I should receive more black filament tomorrow which will help. Then it’s a matter if waiting for my personal shopper (royalmail) to deliver the other items. I have decided I’m going to construct a building board which will go ontop of a table to mount the CNC.
Ryan is the person who designed and released this to the masses. If you have any problems, post inside the forum as you get a response almost immediately.
so, pour yourself an ice cold drink, kick of your shoes and relax into this woulderful world of MPCNC
regardsJuly 17, 2018 at 3:51 pm #63975
Today saw the majority of printing finished. I then decided to draw and print the supports as detailed above.
one sample as now been printed and tested to make sure it doesn’t foul the stepper motor carriages.
Well, that’s me done for today. Hopefully the new filament will arrive tomorrow and I can then print the last two parts…..
Attachments:July 18, 2018 at 2:41 am #64040
very nice mid supports. regarding the table. I owned a black ikea table which is square but has two leaves which slide out to double the length. initially I built the mpcnc on this table and realised how good a fit it was, then I realised It would also mean if I ever wanted to expand the length I could do that for the cost of more conduit and gt belt and maybe building some supports for the leaves of the table to avoid sagging. However this was our dinning table so I got on gumtree and found another identical one locally for £80. So now I have that in my office outside.
A fringe benefit which I am yet to take advantage of is that I can seat about 14 people to dinner using the two tables together if I should so please. anyway its just food for thought if you need a table. They are about £300 new so I wouldn’t buy a new one, mine are both second hand. nearly everything I own is second hand (except toilet roll oh and I bought my anet a8 new) Anyway great centre suportsJuly 18, 2018 at 5:44 am #64047
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