PMMA sheet as print bed

Post improvements made for UP, and share ideas.
Jena67
Posts: 50
Joined: Sat Dec 10, 2011 9:28 am

PMMA sheet as print bed

Post by Jena67 » Thu Oct 31, 2013 11:35 pm

Hi,

I've posted some pictures long time ago of my UP! using a sheet of ABS screwed to the original alu plate as print bed, of course I've disconnected the bed heater!

I printed on it with ABS wire, I was really happy of the results, no wrapping and the great thing was that I did not need to heat the bed so I could start printing immediately.

Due to the fact I work in a company where we produce ABS and HIPS sheets for industrial purpose I used a scrape sheet for testing.

In our company we started to produce PMMA sheets also, so I decided to try to use it as print bed.

It worked perfectly, I used a 6mm thick sheet and I started printing ABS on it.

In the last week I decided to try to make some filament wire using hardware from our company so I ended up with a prototype production line that can extrude 1.75 and 3mm thick wires.

Yesterday I started extruding HIPS wire, it's the most available material I have now and it doesn't need to be pre-desiccated before extruding.

I made some orange, green and neutral wire for my UP!

My surprise was that it sticks perfectly to PMMA, the printing even w/o raft comes our really nice.

I found HIPS a great product too to work with, it has a good finish, tough enough and it doesn't smell like ABS, I have no experience on PLA due to the fact we don't use it in our company.

I am thinking to try to produce some wire for selling, if somebody is interested into testing it (HIPS wire with PMMA bed), please let me know.

I know my structure that holds the PMMA plate is much too thick, I have the nozzle height set at 113mm...

6mm PMMA is rigid enough to replace the original alu bed but I did not want to use screws anymore to remove the print bed.

I can produce the wire in almost any color, metallic included.

Please don't hesitate to contact me if you have any interest or suggestion.

I'd also like to share experience with any of you who has been using HIPS wire.

Ciao

Antonio
Attachments
Two Colors.jpg
Two Colors.jpg (212.48 KiB) Viewed 21841 times
PMMA print bed with green HIPS printed part.jpg
PMMA print bed with green HIPS printed part.jpg (156.71 KiB) Viewed 21841 times
Detail of a 0.2mm HIPS print.jpg
Detail of a 0.2mm HIPS print.jpg (159.41 KiB) Viewed 21841 times

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JuliaDee
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Re: PMMA sheet as print bed

Post by JuliaDee » Fri Nov 01, 2013 2:21 am

HIPS is interesting, there isn't much around and I'd love to give it a try sometime.

If you can make filament that truly looks metallic I'm sure you will find many buyers for it (myself included!)

julia

Jena67
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Joined: Sat Dec 10, 2011 9:28 am

Re: PMMA sheet as print bed

Post by Jena67 » Fri Nov 01, 2013 8:16 am

Hi Julia,

I will make some wire with metallic pigment, it won't look like a chromed part, specially because you get shiny effect using a GPPS layer on the HIPS, at least in our sheet production, and I can't produce the wire in GPPS or it'll be much too brittle.

I'll keep you updated, if it works I can send you an envelope with some meters to try.


Antonio

Jena67
Posts: 50
Joined: Sat Dec 10, 2011 9:28 am

Re: PMMA sheet as print bed

Post by Jena67 » Wed Nov 06, 2013 6:17 pm

Going on making wire tests,

Sorry Julia, no metallic, yet!

I've made some experiments with different ABS grades and compounds.

I am almost there, I have really good prints but under specific parameters.

I have designed a much better system to clamp the PMMA bed to the UP holder, in this way you can take the plate out in matter of seconds and the nozzle is at 130.6mm

Please let me know your comments freely.
Attachments
6mm PMMA sheet....jpg
6mm PMMA sheet....jpg (212.12 KiB) Viewed 21764 times
Upper side.jpg
Upper side.jpg (204.01 KiB) Viewed 21764 times
Raft side.jpg
Raft side.jpg (189.02 KiB) Viewed 21764 times

Jena67
Posts: 50
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Re: PMMA sheet as print bed

Post by Jena67 » Wed Nov 06, 2013 6:43 pm

Printer bed and new material in action! :D

see tomorrow morning if it will work out... :roll:
Attachments
IMG_20131106_193509.jpg
IMG_20131106_193509.jpg (207.89 KiB) Viewed 21757 times

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JuliaDee
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Re: PMMA sheet as print bed

Post by JuliaDee » Wed Nov 06, 2013 6:57 pm

Great stuff, Antonio, keep it up! I would like to understand better how the platform clip works, can you post a video?

Best,
Julia

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Astro
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Re: PMMA sheet as print bed

Post by Astro » Thu Nov 07, 2013 10:22 am

Antonio,
Well done! I m really interested in your print bed, I imagine there would be some significant energy/waste savings with your method. How do I get myself on a test list?

Trent

Jena67
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Re: PMMA sheet as print bed

Post by Jena67 » Thu Nov 07, 2013 6:59 pm

Hi Julia,

here is a small video.

http://www.youtube.com/watch?v=a3wRzKCG ... e=youtu.be

Please let me know if it's not clear.

I have uploaded the file here:

http://www.thingiverse.com/thing:179504

More things to come.

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JuliaDee
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Re: PMMA sheet as print bed

Post by JuliaDee » Thu Nov 07, 2013 7:06 pm

Thanks, Antonio! So this replaces the aluminum bed, rather than sitting on top of it, right? So it cannot be used with the platform heater?

Looks like a nice solution for materials that don't require a heated bed, but most people like to use a heated bed with ABS to reduce warp/lift.

julia

Jena67
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Joined: Sat Dec 10, 2011 9:28 am

Re: PMMA sheet as print bed

Post by Jena67 » Thu Nov 07, 2013 11:13 pm

Well I'm actually using ABS and no wrapping.

what's really great you don't need to wait for the bed to heat up and you also save a lot in energy....

ABS can bend the PMMA a bit but nothing so bad.

If you print with raft it is not an issue.

Ciao

Jena67
Posts: 50
Joined: Sat Dec 10, 2011 9:28 am

Re: PMMA sheet as print bed

Post by Jena67 » Thu Nov 14, 2013 4:13 pm

OK. I have begun to produce the ABS filament. I have extruded several color and a first test of metallic. I have printed a small robot. I will try the effect after some minutes with acetone fumes. I think it might be a great effect.
I will post some pictures tomorrow.
Stay tuned.

ktronik
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Joined: Thu Apr 25, 2013 4:52 am

Re: PMMA sheet as print bed

Post by ktronik » Thu Nov 14, 2013 10:39 pm

love it!!

Jena67
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Re: PMMA sheet as print bed

Post by Jena67 » Fri Nov 15, 2013 9:16 am

Here it is.

Today I'll make bigger prints and pictures! :D
Attachments
Metallic color print.jpg
Metallic color print.jpg (223.41 KiB) Viewed 21609 times

ktronik
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Re: PMMA sheet as print bed

Post by ktronik » Fri Nov 15, 2013 9:38 am

How can I get a board to test??

cheers

Kerry

Jena67
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Re: PMMA sheet as print bed

Post by Jena67 » Fri Nov 15, 2013 4:01 pm

Hi,

With board you mean a PMMA sheet? or you want to test the wire?

mr6k
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Joined: Tue Feb 14, 2012 11:47 am

Re: PMMA sheet as print bed

Post by mr6k » Fri Nov 15, 2013 6:26 pm

jena67

Can I assume that your PMMA sheet is what I would call Perspex, or acrylic sheet?

cheers

Peter

Jena67
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Joined: Sat Dec 10, 2011 9:28 am

Re: PMMA sheet as print bed

Post by Jena67 » Fri Nov 15, 2013 8:43 pm

I don't really know, PMMA is also known al PLEXIGLASS it's a commercial name.
It's acrylic anyway.

Did you test it?

ktronik
Posts: 96
Joined: Thu Apr 25, 2013 4:52 am

Re: PMMA sheet as print bed

Post by ktronik » Fri Nov 15, 2013 11:10 pm

Jena67 wrote:Hi,

With board you mean a PMMA sheet? or you want to test the wire?
Hi Jena67,

If it works as you say it does, I would love to test, first the PMMA plate and print myself the QR mount, can I assume there is NO mod done to the base plate it sits on, other than removing the top alloy section?

If it can stick ABS, well with no heat and little warping, or ripping off the plate, then I wana test it, as it would speed up things for me and my tiny little machine, that I have to change the bed lots on.
Its good to hear the plate will warp, meaning the ABS IS sticking well. So first I would like to test a PMMA board, and try also some HIPS wire as a test. I can test the temp quite well with my 12 position temp switch, and really find out how it works and if there is a sweet temp spot for good support removal...I and a product designer and tester for my company, so would do a good test and full write up for you...


let me now what you think, cheers

Kerry

mr6k
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Re: PMMA sheet as print bed

Post by mr6k » Sat Nov 16, 2013 11:06 am

jena67,
OK, if it is plexiglass, that is also, here in the UK, known as Perspex or Acrylic sheet.
i have not tried it but may well do so in the future.

cheers

Peter

ktronik
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Joined: Thu Apr 25, 2013 4:52 am

Re: PMMA sheet as print bed

Post by ktronik » Sat Nov 16, 2013 8:17 pm

how close is PMMA to Lexan??

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