Printed DNA30 Bottom Feeder

[mikepetro]

Any pointers to a how-to on CA ?
I can see me getting it horribly wrong and the 911 call of me glued to the ceiling and the refrigerator being played on late night TV.

Sorry, but not really. I have only done a few small parts so far and I am still experimenting. Will experiment some more on some scrap parts and report back when I do.


Acetone/CA at a 2:1 ratio is where I am starting, and lots of nitrile gloves......

 

[jakematic]

Acetone/CA at a 2:1 ratio is where I am starting, and lots of nitrile gloves......

Appreciate your taking the time to help us.

That's what I did with my bungled experiment
Not sure if it was too humid, the brush did that, or what exactly caused all the whitening of the CA...

 

[gdeal]

I used the disposable air brush that Mike posted above. The cerakote is fairly easy to apply. I just mixed it up according to the directions and then sprayed two coats. The second coat was done about 5 minutes after the first coat. The material absorbed a bit, but for the most part it stayed on the surface. Then I baked it at 150F for two hours. Thats it. The only issue with Ceracote is that its expensive. $35 for just a sample size and shipping is another $12 or so. The sample looks like it can do at least 5 or 6 mods ( I only had a small amount to barely get two done.) Mike would probably have a better estimate for this. So it could be a good alternative to shapeway's colored plastic. Not as easy as a coat of poly or acrylic, but benefits are definitely there.

 

[B2L]

I can see me getting it horribly wrong and the 911 call of me glued to the ceiling and the refrigerator being played on late night TV.

Just what we need, more ammunition for the anti vaping crowd

 

[mikepetro]

Appreciate your taking the time to help us.

That's what I did with my bungled experiment
Not sure if it was too humid, the brush did that, or what exactly caused all the whitening of the CA...

I suspect that the one of the chemicals dissolved the dye in your case, and if that be the case I would bet on the acetone as I have applied straight CA to dyed parts before and they didnt run.

To test the theory, here is what happened to a dyed part after only a few seconds in straight acetone.

In any event, I wouldnt do the CA treatment on dyed parts, and I would test the acetone on any painted parts as well before attempting it. It does make a great treatment for bare parts though, and I am betting the alumide will come out nice, especially after a good buff.

 

[mikepetro]

Also, you should realize that shapeways dye only penetrates the surface of the part, maybe 1mm or less.

Here is what happened after some light sanding of a part.:

 

[gdeal]

I came across this somewhere, but I dont remember. CA wont stick to this type of gloves. I got a couple hundred of them here.

Amazon.com: Winco Disposable Food Preparation Gloves - Box of 500: Medium, polyethylene: Health & Personal Care

They are supersized and the mediums are more like extra large. They are not very durable, but the CA didnt stick to them. I did not use them to spread the CA, Nitrile finger tips or a paper towel works much better.

 

[Cool_Breeze]

I recall reading a while back that the bare Shapeways parts are prone to soiling from handling and such. Is there a recommended (spray?) application to help avoid such for the surfaces other than the obvious outside of the mod?

 

[gdeal]

This spray is one of the easiest to apply of the ones that I have tried. Its a very light weight coating. You barely notice its there. It seals the material but doesnt add much thickness.

Krylon 1311 Aerosol Matte Satin Finish Spray Enamel 11 Ounce - Spray Paints - Amazon.com

 

[Cool_Breeze]

This spray is one of the easiest to apply of the ones that I have tried. Its a very light weight coating. You barely notice its there. It seals the material but doesnt add much thickness.

Krylon 1311 Aerosol Matte Satin Finish Spray Enamel 11 Ounce - Spray Paints - Amazon.com

Good ol' Krylon...thanks!

 

[Aal_]

Is the white dyed by shapeways or is it the natural color of plastic?

 

[jakematic]

Is the white dyed by shapeways or is it the natural color of plastic?

WSF is the 'natural' color.

Note the additional lead times for dyes and polishing here: https://www.shapeways.com/materials/strong-and-flexible-plastic


You can see the laser sintering (SLS) process in this video

 

[jakematic]

Here is a more up to date video that shows the entire process, including the metals

 

[asdaq]

Hey Jake, I almost believed Squonk Bottom Flats was a real place. Google Maps proves that no, you don't really live there.

 

[jakematic]

Hey Jake, I almost believed Squonk Bottom Flats was a real place. Google Maps proves that no, you don't really live there.

Ahhhh... but you haven't seen my growing collection of BF mods.... and the rest collection dust


Edit
It wouldn't surprise me though if there was a place in NC called SBF.
We do have: Red Cross, Frog Pond, Big Lick, and Climax

 

[B2L]

Big Lick, and Climax

nuppin... Were sposed to behave here

EDIT: sorry, wrong thread, forgot where I was Still applies though, I guess

 

[jakematic]

nuppin... Were sposed to behave here

EDIT: sorry, wrong thread, forgot where I was Still applies though, I guess

ROFL - thought I clicked on the wrong thread for a second....

 

[Aal_]

These threads have to be merged. I see everyone everywhere lol.

 

[mikepetro]

nuppin... Were sposed to behave here

EDIT: sorry, wrong thread, forgot where I was Still applies though, I guess

BEHAVE??????

Brahahahahahaaaaaaaaaaaaaa

 

[Kataphraktos]

Good ol' Krylon...thanks!

I love this stuff. I applied around 6 coats to my purple mod, and it still retained most of the grainy look and feel the original plastic had. It looks the same as the day I finished the mod. I just ordered two more cans of the stuff.