UV Solder Mask VS. Dynamask - a how to guide!

[@republicoftutorials6068]

Removing Solder Mask with CNC 3018 could be an amazing tutorial

[@2lefThumbs]

I've used dyna mask in the past and find it ok (so long ago that I looked this video up as a "refresher course" before I finished the boards I'm currently prototyping). I bought some UV cured liquid at the same time, and had no luck with it🤷‍♂️. I tried both today after watching this, and I'm pretty much sold on the liquid- it seems to cure harder and withstand lead-free soldering temperatures better (with my curing systems), so thanks for dual tutorial!👍👍 Oh, and my premixed tin plating solution had gone off since I last used it, so thanks for showing the label on your tin bath, I bought some powder from this supplier, and it should last me for ages (I only do small boards, so dissolving 18g in 200ml gives me enough to work with for a few weeks, then in a year or five I can make a fresh solution using the long shelf life powder) more thumbs up and thanks for this👍👍

[@DIY-rf8qm]

Damn this looks almost professional! And that with cheap machines/techniques, GREAT!!

[@DIYTECHBROS]

Thank you! Like your channel / video!!

[@AnilArya51]

It looks so professional it's not almost

[@MCircuits]

Masking is great way to protect PCB design, but I still use the old school spray insulating electrical Clear Varnish for personal use. Masking is for somehow for commercial use and really great selling the PCB made.

[@SciHeartJourney]

Great video! May I ask the details about the UV light source you used? Thanks.

[@industryscreenprinterandba3199]

it is mini board,for the PCB industry ,most of factory used the automatic production line.

[@jimmy_jamesjams_a_lot4171]

¡¡¡OOOOOHHHHH!!! ¡NOW! ¡NOW I GET IT! THAT is so smart! THANKS for sharing!!

[@DIYTECHBROS]

Glad it was helpful!

[@Hugatry]

Interesting video. Very clean results with the paint version!

[@DIYTECHBROS]

Thank you Hugatry :-)

[@DIYTECHBROS]

Looks like we use the same cutting mat :-)

[@BurkenProductions]

Yeah ive had my ocb for 30 years and there is s not much oxidation without soldermask either so. Still works

[@dermharse9614]

Can't seem to find really any info on this subject, what if you thinned the mask down with mineral spirits and airbrushed it? Imagine all the cool effects and colors with airbrushing?

[@DIYTECHBROS]

It does not have to UV curable paint. Most paints will protect the board. But, as I have no airbrush skills... wish I did!

[@drQ11235]

I've thought of doing the same... maybe thinning it with alcohol?

[@AnilArya51]

I have a doubt about where to buy Dynamask in India, I did find UV paint but I want to try both.

[@waynehawkins654]

Thanks for this. Was not sure how I used the UV solder mask ink. Just one question, was it just Isopropyl Alcohol you used or in other video I have watch, they use 'PH Increase' with water?

[@AhmadLafi-TheFirst]

Thanks for sharing the knowledge. I wish you had included macro shots for the results.

[@DIYTECHBROS]

That's excellent input! We really should have done that. There were no "error" to warn about, so we forgot that a good would also be important to show. We will include close ups next time!

[@retrolobo]

Nice video!! Could you explain what liquid tin do you use and/or where to buy it? Thank you!

[@drQ11235]

Thanks, your videos are great! I just tried the method using the UV paint, and bizarrely I get the opposite result from what might be expected - exposed paint comes off, stuck to the transparency film, but the uncured regions over the pads remains perfectly on the board. An almost perfect inverted result. I wonder if this is because I haven't cured it enough, or that I have bought a transparency film which the paint really likes sticking to!

[@DIYTECHBROS]

Hi! Sounds like it needs more curing. It the paint still sticky? It is supposed to be, more or less, cured where there is no print on the film. Also, try to roll it off by curving (almost folding) the film and not lifting it straight. Hope it helps :-)

[@drQ11235]

@@DIYTECHBROS hmm, thanks! I'll give that a go. Strangely, the cured areas pull away from the board cleanly, and are not sticky to the touch at all. Which made me think that they must be cured more or less all the way through...

[@DIYTECHBROS]

Sounds strange... have you cleaned the PCB with some subbing alcohol or acetone? Different companies put different protective "oils" on the boards to avoid oxidation. You can also sand it very gently (do not take off to much copper).

[@drQ11235]

@@DIYTECHBROS :D i actually did all of these things! - IPA, acetone and light sanding. One thing did strike me, however, the PCBs I'm making have a filled ground plane on the track side, so are almost entirely copper, which I'm thinking may not have such good adhesion compared with the base material. Although I haven't had a chance to test this theory just yet.

[@drQ11235]

@@DIYTECHBROS I finally managed to get a decent result, mainly as you say with the peeling technique, essentially folding the film right over on itself while peeling. Also my LED torch, i'm fairly sure, isn't very effective (perhaps the wrong wavelength), but leaving the board in the sun (even on an overcast day in the UK) worked quite well. Thanks :)

[@daliborBilogrevic-o5y]

You are a best what uv light using in wat and is this a dynamask 15CMx2M PCB Portable Photosensitive Dry Film for Circuit Photoresist Sheets 1M Brand New For Plating Hole Covering Etching

[@ulaB]

I do like the dynamask. While it's more steps, it looks easier to apply. I am not a big fan of the UV process though. If I wanted to fiddle with a mask and that quite often is not dark enough I could just etch the PCB instead of using the CNC :) Also: I see Adams Readi Board... Are you guys RC aircraft pilots? :)

[@DIYTECHBROS]

I know what you are saying Balu :-) It's so convenient just having CNC doing "all" the work while you can focus on other tasks. Must check it out! Yes, we used to fly, just have not found too much time the last couple of years. So we need to try harder as it is both fund and recreational!

[@jmcgrath777]

I'm looking everywhere but can't find the dynamask in the US!? Anyone know where to buy some?

[@carloscardenas2815]

Thanks for sharing this i've learned a lot. I'm about to buy a UV Lamp. What is the streght of the UV lamp that you use?

[@DIYTECHBROS]

Hi Carlos! We are currently moving our maker space, so it's in a box some were... I would recommend a UV flash light though to save space :-)

[@aleemkhan-hq8yj]

What chemical used for developing solder mask design.

[@eross21]

what uv light do you use here?

[@bertbronson8395]

Why not use the laser to ablate the solder mask from the pads? You wouldnt need uv soldermask that way/

[@RixtronixLAB]

Cool info, thanks :) @7:09, how can you make liquid thin ? where did you buy UV light @3:15

[@thebestempty]

It looks like the resin paint way is also a lot cheaper than the film, right?

[@DIYTECHBROS]

It it a bit cheaper, but if you only make a dozen boards in a year... :-)

[@In_Covert_Official]

Can you do the uv paint over a board that is already etched?

[@matheokoning4456]

What is the name of the liquid tin?

[@goodwill7643]

Thanks for sharing. i use spray lack. Plastik 70.

[@ddsvfo]

Thanks guys, you have helped very much!

[@emiliomontagnana]

Many thanks. Could you please suggest the UV light device? Do you know where can I buy it?

[@dami4335]

Credo sia uno di quei dispositivi per asciugare lo smalto delle unghie.

[@emiliomontagnana]

@@dami4335 penso anche io. Ne ho preso uno... vediamo se funziona

[@dami4335]

Fammi sapere come ti trovi con la mask. Vorrei provare anche io

[@dami4335]

Ciao, novità?

[@emiliomontagnana]

@@dami4335 No, non ho avuto tempo. Ho il materiale ma non ho ancora provato

[@gambangtekop9910]

Excuse me sir, what is type of your printer what did you used on your transparant Paper? Can you tell me about the name of your printer too?, if you want it.

[@DIYTECHBROS]

Hi Gambang! We are using a laser printer and printing on overhead paper (printable clear plastic) We have a old HP printer but any brand will do. This printers can often be bought cheap secondhand.

[@NNITRED]

Excellent video. Very informative. * You guys look like you're fighting to sit in the same chair. LOL

[@DIYTECHBROS]

Now I can't unsee it - you are right! Thanks!

[@ivanbarba5]

have you tryed to remove the paint by burning it on laser instead of using solvents?

[@DIYTECHBROS]

Oh… no… good idea! We’ll gotta try that!

[@ivanbarba5]

@@DIYTECHBROS hope to see results on next videos before buying a laser :)

[@8Junio76]

What laminator do you use for pcb?

[@DIYTECHBROS]

Almost any chap laminator will do! Temperature control is a plus, but we don’t have that.

[@muneeburrehman450]

how to print transparant film

[@kvamsidharvamsi5800]

Nice to see ,can you explain how to make tin plating on pcb

[@DIYTECHBROS]

Yes, sure! That's super easy. Just buy liquid tin, or tin powder that you mix with water - and drop the PCB in the liquid. See for how long according to the product you use, and rinse it off. That's all!

[@kvamsidharvamsi5800]

@@DIYTECHBROS thanks for your reply ,where liquid tin ,or tin powder is generally used

[@retronexusnet]

very nice. thanks

[@theavatar9375]

Bro, How Add PCB Legend?

[@DIYTECHBROS]

Good question! A stencil and spray paint / uv paint may be the easiest option. Or a sharpie? :)

[@АвовНитуп]

at 3:30 how do you develop a UV mask? what is this liquid?

[@DIYTECHBROS]

The UV mask is cures with UV light, like the sun. The liquid is for tinning. It applies a protective cover to the copper, and also makes it easier to solder!

[@АвовНитуп]

@@DIYTECHBROS Apparently the translator does not translate well! After you applied the UV mask, you covered it with a photomask, then illuminated it with a UV lamp, but then you wash off the unlit areas of the mask with a brush. I'm asking WHAT IS THIS LIQUID? Give the link. And what you write about tinning is already the final stage. He is not interesting to me.

[@DIYTECHBROS]

@@АвовНитуп Okay! Just use rubbing alcohol (methylated spirits or isopropanol). Most things that thins / removes paint will work.

[@АвовНитуп]

@@DIYTECHBROS ok! Thank's

[@ivan868]

Yes, this is the voice of Mr. Bean

[@Servis-f3h]

bestt

[@freelectron2029]

why are these guys touching their wangs together? looks like they are talking to us while embracing each other around the waist. super weird....

[@theavatar9375]

Bro, How Add PCB Legend?

[@DIYTECHBROS]

Good question! A stencil and spray paint / uv paint may be the easiest option. Or a sharpie? :)