wave length of Resin

A lost wax capable resin tuned for 70 - 200 micron slice thickness
hubert.du
B9 Maker
B9 Maker
Posts: 91

wave length of Resin

Post#1 » Thu Aug 08, 2013 9:08 pm

Hello, friends:
I bought 1kg resin from local supplier because the USA is too far to send liquid. The wave length of this resin is 410nm, Ec=8.7mj/cm2, Dp=0.16mm. I didn't buy 355nm or lower, because the projector has UV filter.
I printed twice, the thickness of each layer is 0.0635mm, the exposure time of first printing is 10 seconds, no cured at all; the second time is 32s, nothing cured also.
It's my first print, no experience before today.
What wavelength should be? Or what parameter should I set in the print?

Hubert

sidheart
Newbie
Newbie
Posts: 9

wave length of Resin

Post#2 » Fri Aug 09, 2013 3:04 am

It is 405nm. Did you add photo initiator?

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tim.yoshi
B9 Master
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wave length of Resin

Post#3 » Fri Aug 09, 2013 5:30 am

Try to lower the thickness, add some pigment and increase exposure.
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Suijin
B9 Maker
B9 Maker
Posts: 144

wave length of Resin

Post#4 » Mon Aug 12, 2013 1:18 pm

Not the answer, but using an LED source that emits at 470 nm with trail off to about 400 nm does cure the B9-red, but that is really the opposite of what you want to know.

Visible light ends around 400 nm, so I'm not sure how strong the projector emits in that range if really at all.

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