Author Topic: 3D Printer yet?  (Read 66932 times)

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Offline branadic

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Re: 3D Printer yet?
« Reply #50 on: August 15, 2018, 06:21:31 pm »
Quote
Our after-sales engineers will provide you with solutions within 1 working day

Disappointing, they state a 1 working day response. After almost a week no answer :(

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Offline beanflying

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Re: 3D Printer yet?
« Reply #51 on: August 25, 2018, 12:50:29 am »
Anyone got any advice on bed preparation for PETG over Glass or is it time to look at a dedicated print surface?

For no reason at all a few shots of one of this weeks jobs for my shack. Custom backpack designed in Fusion 360 for a Samsung monitor without rear mounting screws and a crusty old Windoze 7 Tablet to run my Laser and small CNC mill from. Clips printed side down for strength, main platter was 16+ hours (should have laser cut it) ::)  4mm fixings into Brass knurl nuts. Way overkill in time and effort but I did it as much for the Fusion skills as anything.
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Offline branadic

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Re: 3D Printer yet?
« Reply #52 on: September 02, 2018, 12:37:11 pm »
After many days of waiting I received an answer from Anycubic with a file. It's the machine parameter file, where you can change setting such as distance per step.

M8010 S0.000625

The motor is driven using 1/16 step mode, so the initial value per step is 0.625┬Ám. By changing this value one can account for the real spindle pitch. The ideal value for it is 2mm per revolution. So printing a cube of known size, measuring the real height (z-value) one can calculate the true value of it and calculate the real value for M8010 with the following equation:

(real spindle pitch) / (( 360 / 1.8 ) * 16 )

Type in the new value into the gcode file, save it and print this file on your Anycubic Photon. Reprint your cube. Now the size in z-direction should match.

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« Last Edit: September 02, 2018, 12:55:33 pm by branadic »
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Offline Fred27

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Re: 3D Printer yet?
« Reply #53 on: September 02, 2018, 03:20:08 pm »
Interesting - although not many other settings seem that useful.

How do you use it? Do you just leave it on the USB stick or do you "print" the gcode file to update the settings?
 

Offline branadic

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Re: 3D Printer yet?
« Reply #54 on: September 02, 2018, 03:26:39 pm »
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print this file on your Anycubic Photon

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Metrology Meeting 2020 is canceled. Looking forward for MM2021
 

Offline beanflying

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Re: 3D Printer yet?
« Reply #55 on: September 05, 2018, 08:47:51 am »
Bit painful on your customer 'support'  :--

So research on PETG much playing and a change of Gluestick from UHU to Bostik. The Bed is now starting at 70C for the first layer reducing to 65 for the prints and 245C Filiment. I was having fairly major issues with Oozing using my modified PLA profile so increased the retraction, reduced the outer perimeter speed a little and made it print that one first rather than the defualt Slic3R last. Still a little stringing but the rework station looks after most of those.

This print is 280x110mm printed on the diagonal. Really easy release on a cooled bed  :-+

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Offline beanflying

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Re: 3D Printer yet?
« Reply #56 on: September 18, 2018, 05:18:44 am »
Few Metres of clear PETG on the roll LED diffuser experiment. under 1M for the bullets (12) and under 2M for the 7 with ribs.

Anyone else got any good electronic uses for the ends of rolls?

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Offline metrologist

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Re: 3D Printer yet?
« Reply #57 on: September 18, 2018, 08:27:48 pm »
That's awesome.

I see the CR-10 is over $480USD at gearbest. I probably would have bought the s model if it were in the mid $300 range. I guess the price jump is due to tariffs? Maybe the good times are over...  :scared:
 

Online CatalinaWOW

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Re: 3D Printer yet?
« Reply #58 on: September 18, 2018, 08:41:06 pm »
Just bought a Creality Ender 3.  It is like a smaller version of the CR-10.  Paid $169 and I am delighted.  Set up and debugging took just a couple of hours.  Have already printed a couple of knobs to replace broken vert channel knobs on an oscilloscope and next will come a new housing for an old favorite DMM that actually never had a back.  Was purchased many moons ago as a bag of non-economic to repair parts from the warranty provider.  I got one good meter and a bunch of spare parts out of the deal.

The Ender 3 has a build volume which is roughly 220 mm on a side (about a foot for us old units guys), more than enough for the kind of things I want to build.  Also more than enough for the kind of things that I am will to wait for the print.

The toughest part of the whole thing is the 3D modeling aspect.  Much to learn there, including picking a suitable program and learning it.  Blender makes pretty models, but I haven't found an easy way to set real dimensions.  Solidworks does a great job (for those up the learning curve) but my access to it is limited.  I've tried a couple of others and am not ready to recommend anything yet.  Cura is working well for me for the step from model to g-code.
 

Offline beanflying

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Re: 3D Printer yet?
« Reply #59 on: September 18, 2018, 11:15:33 pm »
The 3D CAD does take some getting your head around. The last 'formal' training I had on CAD was about 30 years ago HP Mini computer system and very very early version of Autocad :palm:

When you start getting the hang of it simple bits like those diffusers were 10-15 minutes of cad time and I have done a bunch of simple mechanical bushes and knobs for various jobs. The Fusion 360 'Revolve' command makes these really simple.  :-+

Draw the profile of the bush/knob/widget, revolve and add some fillets on the corners.
« Last Edit: September 18, 2018, 11:22:37 pm by beanflying »
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Offline Red Squirrel

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Re: 3D Printer yet?
« Reply #60 on: September 18, 2018, 11:21:27 pm »
I kinda want to get a 3D printer but have not done much research yet.  I use Linux and I imagine most of them probably require Windows. Linux lacks pretty badly in the CAD department, most of the tools are kind of tedious and unintuitive to use.
 

Online Monkeh

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Re: 3D Printer yet?
« Reply #61 on: September 18, 2018, 11:36:16 pm »
I kinda want to get a 3D printer but have not done much research yet.  I use Linux and I imagine most of them probably require Windows.

Not at all.
 
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Offline CJay

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Re: 3D Printer yet?
« Reply #62 on: September 19, 2018, 05:46:14 am »
The 3D CAD does take some getting your head around. The last 'formal' training I had on CAD was about 30 years ago HP Mini computer system and very very early version of Autocad :palm:

When you start getting the hang of it simple bits like those diffusers were 10-15 minutes of cad time and I have done a bunch of simple mechanical bushes and knobs for various jobs. The Fusion 360 'Revolve' command makes these really simple.  :-+

Draw the profile of the bush/knob/widget, revolve and add some fillets on the corners.

I've spent a bit of time getting to know how to 'draw' things in various CAD programs, it took a little practice but soon  got the grasp of it and have made a few electronics related things, potentiometer shaft extensions with splines, brackets to hold boards and parts like this battery case for a Yaesu handheld:
 

Offline beanflying

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Re: 3D Printer yet?
« Reply #63 on: September 19, 2018, 08:56:34 am »
I am enjoying learning the CAD. Today's project (about 3 hours) is a custom project box design to neat fit 7x9cm evilbay boards. As the design is parametric via Fusion 360 scaling up or down is a matter of minutes. That is scaling in any dimension is a couple of clicks and holes etc remain the same.

This design will print with no supports and is made to take 3mm knurl nuts in the body and 3mm countersunk screws through the lid. Small self tappers to lock the board to the body of the box. Either a laser cut lid of this one could be used depending on the job.
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Offline beanflying

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Re: 3D Printer yet?
« Reply #64 on: September 20, 2018, 09:03:02 am »
About 9 hours of printing. Direct on clean glass at 55 degrees C with PLA filament. Photos as shown with zero mechanical cleanup other than inserting the knurl nuts. Bed was still cooling at 36C when all done for the photos. :-+

The Body of the box is 3mm on the sides and base but I will tweak the design to 2.2 or maybe 2.5mm to save a little time and material. The finish on the upper and lower surfaces without adhesive is fantastic one corner of the box lifted by fractions of a mm so maybe a brim needed?

Other than that very happy  8)
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Offline aargee

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Re: 3D Printer yet?
« Reply #65 on: September 20, 2018, 12:58:55 pm »
I use hairspray on glass, works a treat.
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Offline metrologist

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Re: 3D Printer yet?
« Reply #66 on: September 20, 2018, 02:32:48 pm »
I'm a little torn on the Ender 3. MakersMuse did not seem to have a favorable review. I mean he recommended it, but just about every print he showed had flaws and he had to replace the feed system to get it to work at all. The RC life on guy showed it perform beautifully out of the box, and a couple others were OK. I just could not watch Naomi's unboxing (she's been back online for a while now, I guess).

Anyway, gearbest had a good $169 price, but have no stock and there is at least a hundred unit backlog/wait list for the US plug - that's cheap enough I won't care much how it does, if I have to just toss it, etc.
 

Offline SeanB

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Re: 3D Printer yet?
« Reply #67 on: September 20, 2018, 04:25:06 pm »
Well, today I picked up something from one of our suppliers, who asked if i wanted something they had for free. Got a CubeX Duo printer, now have to get together everything i need to actually use it. Even got some new reels of filament as well.

Time to make a new Vm with XP image and get the software running on it. Will save that for the weekend, just reading up the manual, then get the software and decide if i keep it as is or retrofit it, though probably will keep it as is for now.
 

Offline beanflying

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Re: 3D Printer yet?
« Reply #68 on: September 20, 2018, 06:19:03 pm »
I'm a little torn on the Ender 3. MakersMuse did not seem to have a favorable review. I mean he recommended it, but just about every print he showed had flaws and he had to replace the feed system to get it to work at all. The RC life on guy showed it perform beautifully out of the box, and a couple others were OK. I just could not watch Naomi's unboxing (she's been back online for a while now, I guess).

Anyway, gearbest had a good $169 price, but have no stock and there is at least a hundred unit backlog/wait list for the US plug - that's cheap enough I won't care much how it does, if I have to just toss it, etc.

The Capricorn Bowden is nice and better fittings are a must IMO. The Creality fittings on my CR10S were rubbish and I was having some issues with the tubing at PETG temperatures. So far so good with the Capricorn at 245C.
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Online rdl

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Re: 3D Printer yet?
« Reply #69 on: September 20, 2018, 07:41:45 pm »
I bought a Monoprice Select Mini today. I'm still trying to figure out why because I surely didn't need one. It's a refurb and was really cheap. I guess that's reason enough. It should arrive sometime next week.
 

Offline beanflying

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Re: 3D Printer yet?
« Reply #70 on: September 21, 2018, 04:26:38 am »
If anyone wants to have a play I have attached the Fusion 360 file and STL's for the Box and Lid. Needs 3x10mm C/Sunk screws and 3x5mm knurl nuts both easy to get on evilbay. You could always mod the hole sizes to take self tappers instead on the drawing then make new STL's but a stash of knurl nuts is worth it.

This drawing now has the floor and lid shelled out to 2mm and the side walls reduced to 2.5mm. The CR-10S print times are back to about 8 hours and 25m of Filament for both. So the cost per box is under $3 plus a bit of power with the hardware.

Printing with a 6mm skirt is keeping it locked down to the glass better still with no adhesive. I have tried one flavour of Hairspray and it didn't go well, bare glass for PLA seems to work fairly well but I am still playing. In stock size it takes an Arduino UNO and Shield as per the photo vertically so it should be a decent all round enclosure.
« Last Edit: September 21, 2018, 10:29:42 am by beanflying »
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Online CatalinaWOW

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Re: 3D Printer yet?
« Reply #71 on: September 22, 2018, 07:01:55 pm »
After a few days use I am less pleased with the Creality Ender 3.  It failed.  Dead power supply.   On opening up found a surge limiting thermister had violently let the smoke out.  I have not yet determined the value so repair is on standby.  I went ahead and did a network buy of a replacement unit (under $20 shipped).  But in the meantime I pulled out one of my linear boat anchor supplies to power up the machine.  Works great and has a built in current meter.   Which shows that during bed heating this puppy draws 30 amps.  Which is an issue since the supplied power box is rated at 15A.  No wonder it blew. 

Apparently they are getting away with this overload because the initial heating phase only lasts a couple of minutes.  After that the average power draw is down in the couple of amp range.   Some large number of them must be surviving for at least a few months.

This still is a good buy (price vs performance), but anyone pulling the trigger on this unit would be well advised to buy the available (from several sources) exact same form factor supply rated at 30 amps.  It costs a few dollars more than the replacement I bought, and it seems likely one of these will be in my future.
 

Online Monkeh

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Re: 3D Printer yet?
« Reply #72 on: September 22, 2018, 07:04:08 pm »
After a few days use I am less pleased with the Creality Ender 3.  It failed.  Dead power supply.   On opening up found a surge limiting thermister had violently let the smoke out.  I have not yet determined the value so repair is on standby.  I went ahead and did a network buy of a replacement unit (under $20 shipped).  But in the meantime I pulled out one of my linear boat anchor supplies to power up the machine.  Works great and has a built in current meter.   Which shows that during bed heating this puppy draws 30 amps.  Which is an issue since the supplied power box is rated at 15A.  No wonder it blew. 

Apparently they are getting away with this overload because the initial heating phase only lasts a couple of minutes.  After that the average power draw is down in the couple of amp range.   Some large number of them must be surviving for at least a few months.

It's a 24V supply - there's no way it should be drawing 30A. Something is wrong.
 

Online NiHaoMike

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Re: 3D Printer yet?
« Reply #73 on: September 22, 2018, 07:35:57 pm »
Check to make sure the bed heater is actually a 24V version?
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Online CatalinaWOW

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Re: 3D Printer yet?
« Reply #74 on: September 22, 2018, 11:15:22 pm »
That is the current at 24 volts.  Not the current from the mains.  I will look into the heater rating, but it is the one supplied.  It is in one of the pre-assembled parts of the kit.  If it is indeed not intended for 24 volts, or if it is connected improperly for 24V, that is merely a different error on Creality's part.
 


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