Autosol Neptune emulsion by MacDermid Autotype

Here you can discuss issues related to exposing screens for screen printing. This includes determining the exposure, light sources and washing out the stencil in the washout booth. Emulsion issues may also be addressed here.

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Shamax
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Autosol Neptune emulsion by MacDermid Autotype

Post by Shamax »

On Wednesday I received my gallon of MacDermid Autotype's "Autosol Neptune" emulsion courtesy of Jonathan's latest giveaway. I'm not afraid to admit that I was giddy the moment the secretary buzzed me to let me know there was a package :P Once I got it home, I proceeded to degrease and prep 3 screens which I then coated and stashed in my usually ghetto light-safe box overnight. Last night, printed out an 8.5" x 11" exposure calculator and set about dialing in my exposure time. I'd estimated (compared to the recommended times on the stuff I *had* been using) that proper exposure time would be about 6 minutes with my 500w halogen (fast acting stuff!!)

I went to wash-out in the bathtub as per usual, and I was FLOORED at how much easier ti Autosol Neptune was to work with! With the WBP I was using from Ryonet, I'd have to expose for 12-13 minutes and run the screen under the faucet for a good half an hour or more of spraying, rubbing the stencil lightly, turning, spraying more, etc. With the Neptune, I got it a little damp, let it develop for about 10-15 seconds, and began washing, using my hand against the faucet to create a higher-pressure spray and I watched the unexposed areas almost INSTANTLY wash away! I'd say washout for each screen took 5-10 minutes tops, and my calculation of a 6 minute exposure time seemed almost spot on with the calculator I used. My Saati 21-step wedge seemed a tad underexposed, so I may up it to 6.5 minutes, but the Neptune also seemed pretty forgiving with exposure times, even on the areas of my initial calculation that exposed for almost 9 minutes.

I may try to write a more thorough review at some point, but I just wanted to geek out and share my thoughts and thanks on the awesome and much appreciated giveaway. :mrgreen:
Andy Barker
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Catspit Productions
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Re: Autosol Neptune emulsion by MacDermid Autotype

Post by Catspit Productions »

That is freakin awesome as some would say ;) This is great to hear and I have to take just a minute to toot my own horn.

The advice and recommendations I give are truly from my heart. I believe in the products I represent and sell. With screen printing sometimes when you pay a little more for a product, it can save time and labor when working with it. Just because a product is cheap, easily available with free shipping does not mean it is the best product for the job.

As a person who has screen printed for most of my life and who has done it to earn a living I can give you real advice. That’s why I represent and sell both MacDermid Autotype and Saati emulsions; because they are excellent and these products won’t waste your time or money.

Okay sorry about that... LOL. Now I have to say thank you very much for this post. Very cool and I am so happy the emulsion helped out to such a degree. Look how a superior product helped out with maybe not so ideal conditions too. Working under a faucet for 30 minutes or so? Wow this cut you down to 5 to 10 minutes?

So this goes to show that even people working at home under less than ideal conditions can help themselves by getting good products rather than cheap ones. I love the detail you gave here and if you add anymore that would be awesome.

12 to 13 minute exposure times cut down to 6 with a 500 watt work lamp even yes? I’m sorry, I just love this. Thank you so much for sharing this information. I look forward to hearing more as you work with it.

Good luck and you’re very welcome. Thanks so much for the killer post! :D
Jonathan Monaco
Catspit Productions, LLC
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http://catspitscreenprintsupply.com/
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Cycle Surgeon
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Re: Autosol Neptune emulsion by MacDermid Autotype

Post by Cycle Surgeon »

I did my first step test today with the product I also received from the give away. It took me 3 tries! I was thinking 6.5 minutes (my normal exposure time with SPSS house brand) as a median range to work with to start (using a Yudu as an exposure unit like I always do). Well...I over exposed the heck out of that screen. Second try I thought 4 minutes for my median starting at 2.5 min. LOL, wrong again!!

I finally started with a 30 second exposure and worked up to 2 minutes. I ended up with great halftone results with a white 180 mesh at about 45 seconds. Needless to say, I'm really blown away with these results. Tomorrow I'm getting started on my third ever 4 color process print test.

Oh and I also watched Macdermid's application tutorial and set up a coating stand so I could handle my coater with two hands. I got much better results than I do with holding the screen with one hand and coating with the other. I'm doing the Snoopy dance tonight! Now I have to look to see if it is available in quarts for hobby printers like me.

Thanks again Jonathan.

C
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Catspit Productions
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Re: Autosol Neptune emulsion by MacDermid Autotype

Post by Catspit Productions »

You're very welcome!

Man that is awesome Chris. I have never tried the SPSS house brand but I’m guessing it’s a dual cure which is much slower than a photopolymer like the Neptune. The Neptune may be used with plastisol and water based inks.

This emulsion should help you out and make things much easier. If you want to buy this emulsion I am a MacDermid dealer as well so I can offer this to you in the future when you may need it. I’ll check on whether or not they make quarts of this stuff. Not sure about that.

The coating stand is a great luxury. Many shops use the same type of device to standardize the manual coating as much as possible.

Thanks for the great post; I appreciate the feedback and details. Have fun and enjoy the emulsion ;)
Jonathan Monaco
Catspit Productions, LLC
Learn how to screen print tee shirts!

http://catspitscreenprintsupply.com/
http://www.youtube.com/user/CatspitProductions
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