Ulti-Printer 200x300mm

chriske

Ulti-Printer 200x300mm
June 25, 2017 04:55PM

Registered: 9 years ago
Posts: 175

A second Ulti-Printer, this one has a heated bed(silicone 240V) 200x300mm.
In this design I added a fast interchangeable hotend. This hotend is replaced in a matter of seconds.(just two screws to remove)
I did not use linear bearings. I made my own adjustable bearings, so there's no play at all. To do this I needed 56(!) ball bearings.
Made one for myself and a second is made by my pupil.

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Attachments:
open | download - Ulti-printer-200x300-1.JPG (142 KB)
open | download - Ulti-printer-200x300-3.JPG (133 KB)
open | download - Ulti-printer-200x300-4.JPG (143.3 KB)
open | download - Ulti-printer-200x300-5.JPG (58.7 KB)
open | download - Ulti-printer-200x300-6.JPG (99.8 KB)
open | download - hotendswap1.JPG (84.1 KB)
open | download - hotendswap2.JPG (46.8 KB)
open | download - hotendswap3.JPG (83.1 KB)
open | download - hotendswap4.JPG (86.5 KB)
open | download - hotendswap5.JPG (81.9 KB)

chriske

Re: Ulti-Printer 200x300mm
June 29, 2017 11:32AM

Registered: 9 years ago
Posts: 175

E3D hotends are rather expensive, especially when I need a handfull of these things for my fast interchangeable hotend system, so except for the heatercartridge and the PT100 I make my own.
Heatsincks already done, heaterblocks to, busy making the heatbreaks now. I make these heatbreaks from M6 SS bolts.
What's man without a lathe...? grinning smiley

Made 12 nozzles, from0.43mm up to 0.8mm

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Attachments:
open | download - nozzle-03.JPG (59.6 KB)

chriske

Re: Ulti-Printer 200x300mm
June 30, 2017 03:17AM

Registered: 9 years ago
Posts: 175

2 attached pictures tell it all.
The green part is printed on one of my older printers. Many people will think, not bad at all.
But looking at the second picture, that black part is printed with my Ulti-Printer, judge for yourself. The quality of that perimeter is far better than the green part.

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Attachments:
open | download - ulti-compare-1.JPG (101.5 KB)
open | download - ulti-compare-2.JPG (129 KB)

ormerod168

Re: Ulti-Printer 200x300mm
July 01, 2017 07:38AM

Registered: 10 years ago
Posts: 1,230

Nice! - the blue thing around the nozzle - heat shield made of silicon?

ulti-printer-hotend.JPG

Erik

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chriske

Re: Ulti-Printer 200x300mm
July 01, 2017 09:05AM

Registered: 9 years ago
Posts: 175

Silicone indeed

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ormerod168

Re: Ulti-Printer 200x300mm
July 01, 2017 12:35PM

Registered: 10 years ago
Posts: 1,230

Quote
chriske
Silicone indeed

Thank You!, I really could use one of those - should think that explains how you can print such a tiny 0.78mm rod without collapsing

ulti-printer-test.jpg

Erik

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chriske

Re: Ulti-Printer 200x300mm
July 02, 2017 04:24PM

Registered: 9 years ago
Posts: 175

Busy making 12 E3D hotends for these two printers i just made. Lucky me I have a lathe and a mill.
To give an idea of the prices : Heatbreaks are made out of SS bolts M6. One box 50psc cost about 12€. Buying just 1(!) heatbreak from E3D would cost me 11.50£
Same story with the heatsinck, heaterblock, nozzles.
Now I have to wait to assemble and finish these hotends because the PT100 thermistors are out of stock... sad smiley

Making these hotends myself saves me 32.4€x12 = 389€

Edited 1 time(s). Last edit at 07/02/2017 04:47PM by chriske.

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prot0typ1cal

Re: Ulti-Printer 200x300mm
July 05, 2017 02:16PM

Registered: 7 years ago
Posts: 249

Surprised you didn't use a reamer on the small through hole.
Under the impression surface finish and size was critical in this location.

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chriske

Re: Ulti-Printer 200x300mm
July 09, 2017 01:30PM

Registered: 9 years ago
Posts: 175

First drilled 1.8mm, followed by a 2mm drillbit. I advanced the 2mm drillbit veeeeeeeeeryyyyyyyy slowly, to simulate a reamer. The surfaces of my heatbreaks are not 100% smooth/clean but It works, until now no issues at all during printing. I have a 2mm reamer but to ream SS is a 'nasty' job. As a matter of fact don't like to work with SS.

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chriske

Re: Ulti-Printer 200x300mm
July 17, 2017 11:21AM

Registered: 9 years ago
Posts: 175

A few of my selfmade fast interchangeable hotends...

hotendswap6.JPG

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