Pompoko

6 hours ago, xxxxxyyyyy said:

Hi Guys,

 

I see this UV LED:https://www.aliexpress.com/item/4000224260797.html

What nm Do I need?

395nm is most universal for most available inks 

Both ....led life and printer head .... what china guys suggested is use 12v and 1A constant current PSU  it cure ink well so  I think not extra power and extra heat is needed.

Hmm I set one of these 12v 1A and it was more than enough to cure ink I used so  go down as low you can ...Save your printhead life ...

On 10/31/2019 at 2:54 PM, telioskorea said:

Which led module it yours one ? Do you have any aliexpress link or led module model ? As  there is a lot of variations.

Megainks .....Mimiaki Lus120.....Nazdar260 ....UV works without any profiling needed as they was mixed to be used with epsons dx4...dx5...dx7 printing heads

16 hours ago, telioskorea said:

I have made air cooling uv led lamp and tested more than 500 hours. it is 3.6w/pc*21/pc=75.6W one.

Operating voltage is max.25.4V, but I fix my dc power supply(smps) to 23.5V for continuous LED lighting and no clogging.

Printer is Epson p600, 8channel one. I can enjoy 1440*1440 resolution printing  long time, maybe more than one year without any clogging of printhead.

In my experience, bad Uv ink damages printhead seriously even though you lowered led power supply to enough safe zone.

Bad ink break the inner mechanism of printhead within several hour continuous printing.

Pls try to find quality uv inks to keep printhead in high condition.

 

 

 

so which ink do you recommend ?? I am use Megainks soft and I am so far so happy with...works without any extra colour profiling as is prepared for epson users base on orginal epson colours....

1 hour ago, anum11 said:

it melts eco solvent heads after a while as far as i know. as for l1800, if it’s head same with r1400; i have got one looks same 6 channel. it dx5 and dx7 atleast 3 times faster at 1440x1440. also you can go down to 720x720 on dx5 and dx7 heads which will insanely increase your print speed on top of that. Also can fire 3-4 times more white ink and about 2x cmyk on a pass.

edit: also r1400 clogs faster.

Hmm my friend use led uv ink in 1500w for more than 2 years already .... never had any clogs ....and was not aware of cleaning caping station too:) so seems like it is not as bad.... of course on my L1800 I hade to replace dampera anb tubes plus caping station tubes to solven friendly and uv blocking ones..... otherwise it seems to works fine .... i have tested some uv ink under day light and it not cure... cure well when strong uv lamps is used close to it ....

I mostly print on plywood  and I am happy with my results  not 100% happy with speed so  it is why I looking in to it  

37 minutes ago, anum11 said:

i think you would need to replace eco solvent print head for uv along with all ink lines, dumpers and catridges and maybe cap.

dx5 uv head is like this for example:

https://www.alibaba.com/product-detail/original-mimaki-jv33-printer-jv5-printhead_60726433769.html?spm=a2700.7724857.normalList.12.3f001800l124Fo&s=p

P600 is coming with gold ecosolvent head and caping station ......I have L1800 converted and it works so good ...I just wonder if P600 will be faster ....as it have 4 chanells for white... or 3 for white and one for varnish ....which will helps mi prints on glass...acrylic ans some metals..... as with L1800 i need to use manual primer aplications....

On 9/13/2019 at 10:51 PM, Andy - Admin said:

I was somewhat serious. Some lights are thin enough to fit. 

Andy will little uv as my one installed on L1800 works fine with  P600 . I have spare brand new p600 which can be converted.L1800 have cheep printing heads but it is quite slow ...i just wonder if P600 will do the job better ? 

11 minutes ago, maxalford said:

where did you get your UV setup

 

2 minutes ago, maxalford said:

where did you get your UV setup

 

Aliexpress ...hand Cutted pice of aluminium just to fit ...6mm clear tubes .... plastic water container plus fish tank water pump....

View wirh reflection from underneath 

Fits well L1800 and just fits without cutting anything ...more mods in the future  

I tested my little 60w module..today .... as suggested by few guys I moved it a bit up let say 4-5mm over printing head level to cover wider area and avoid polymerisation on the head itself ...I tested full platen printing and it works fine ....constant current led driver used ...seems like it is scratch proof ..too I was not able to scratch it easy even with sharp knife .... more testing soon  module is water cooled  I will use 5-10l of destiled water and fish tank pump...Today I used 45l but it is too risky to have such big capacity...heasink is almost freezing but uv under seem to be so strong I may even set dimmer to way lower power 

On 9/13/2019 at 9:51 PM, Andy - Admin said:

Mount it on the side of the printhead and see if it hits when the head goes all the way over. If so then you need to cut out what it hits

What about P600 as UV printer ? Is there more room for uv diodes ? What about uv cartridges ? Are they available ? Or using standard uv dampers and bottles is better way ? 

6 hours ago, maxalford said:

move the encoder wheel 

Wow interesting  will you share stl for this 3d printed bracket ? how yours enclosure  looks like as I guess Orginal one will not fit when it is moved .

1 hour ago, Andy - Admin said:

I was somewhat serious. Some lights are thin enough to fit. 

Hmm so looks like it is worth to try  ..:without cutting first ...I also wonder if is possible to set up pernament  offset in the firmware ? 

7 minutes ago, Andy - Admin said:

Mount it on the side of the printhead and see if it hits when the head goes all the way over. If so then you need to cut out what it hits

Hahaha   good one   I have encoder wheel behind  It is why askign how the guys done it  

On 9/4/2019 at 9:17 PM, maxalford said:

had to cut the left side out to fit it and with most converted UV printers you don't get the full cure on the right hand side but being a flat bed you just move it to the left a bit and print good thing about rip software it lets you place your print where you want it on the bed it will print a full A3 size and the watercooled units are the best as the ink mist eventually clogs the cooling block on the fan cooled unit

do you have it instlled on L1800 ? share pictures how you cutted frame please ... 

Epson L1800 how to install it ? Do I need to cut anything ? Askign as I think Printer head goes far right when autoleveling head ? Any pictures of installations on L1800? 

6 hours ago, maxalford said:

this is what I use 

What power ? 395Nm?  Is it cure full plate width ? Is left side of the printed Cutted ? To fit it or it fits without any modyfications ? 

6 minutes ago, reptilesink said:

With 40w of led which typically have a beam pattern of 120 degree it will cure all the platen area.

China Guys call it “60w”  what will be the best power source ?

I have that one ...just wonder if it will perform better than air cooled ? How to override settings and make head goes far right to make sure it covers full platform area with uv light and cure ink .