#How do i stop my paint from cracking all the time on my 3d prints?

93 messages · Page 1 of 1 (latest)

graceful creek
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I used bambulab pla basic at 230 celsius nozzle temp

loud duneBOT
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graceful creek
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I used citadel chaos black spray paint

trail fossil
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Can you please show a photo of your issue?

graceful creek
trail fossil
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Did you sand your print before painting?

graceful creek
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is it needed?

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im new to this

trail fossil
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Yes it is for proper adhesion

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Without sanding the paint has nothing to stick to

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Preparation is the number 1 key to a good paint job

graceful creek
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rip

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no sandpaper so ig i cant do it

trail fossil
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Sandpaper is relatively cheap

graceful creek
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im a minor and nearest hardware shop is like 15 km away

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maybe if i can convince my mom to drive me

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actually could i buy online?

trail fossil
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If you are not looking for perfect results and just a quick paint job a quick scuff of 80 grit could help with adhesion

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If you are serious I would do 80, 180, 220, 320, primer, 600, paint

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That’s my process

graceful creek
trail fossil
graceful creek
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i have no idea what u just said

trail fossil
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So a high build primer is thicker so it can fill in the imperfections in the surface whilst providing adhesion for paint

graceful creek
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ight final question

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i got some warhammer at home

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just the regular space marines

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do i need to sand them first as well?

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or can i just do it without sanding

trail fossil
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You could just hit it with a scuff pad and go to paint

graceful creek
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so in conclusion i need sandpaper

trail fossil
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This is a scuff pad

IMG_1165.jpg
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It’s a soft abrasive which prepares the surface without removing too much material

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It is used when a surface is already smooth

graceful creek
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ight

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damn this getting expensive icl

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its dutch but

trail fossil
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Do you have an electric sander?

graceful creek
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no

trail fossil
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Those are for one

graceful creek
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oh

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damn

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just need one which is just a sheet

trail fossil
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Yes

graceful creek
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this?

trail fossil
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Yes but that is only 60 grit

graceful creek
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this one is 80 https://www.praxis.nl/gereedschap-werkplaats/handgereedschap/schuurpapier-blokken/schuurpapier/sencys-schuurvel-stearaat-wit-230x280mm-p80-3st/10052297

Sencys schuurvel stearaat wit 230x280mm P80 3st

Reinig het oppervlak voor je gaat schuren om vuil-, vet- en andere resten weg te nemen. Zo verslijt het schuurpapier minder snel en behaal je een beter resultaat. Draag tijdens het schuren een veiligheidsbril en een stofmasker. Gebruik dit schuurpapier altijd zonder water en op een droog

trail fossil
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You should get grits in order from low to high to get smoother results

graceful creek
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ight

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if i could only get 1

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which one should i get

trail fossil
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For something small like that I guess you could get 80 but the finish would not be that good

graceful creek
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tbh idk

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i just want to paint my 3d prints fr

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nothing too complicated

trail fossil
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Also you want to do lighter coats with paint, not too heavy

trail fossil
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And I don’t mean that in a harsh way

graceful creek
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i get what u mean

trail fossil
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Just if you want something to look good you have to put in the effort

graceful creek
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could i use old belt sander belts?

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cuz my grandpa has a bunch of those

trail fossil
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I personally work in a body shop so I’m used to sanding for long periods of time

trail fossil
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Never used them personally

graceful creek
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k

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tbf if they can eat through the metal of some old scissors i think they will do fine with plastic

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cya and gn then

trail fossil
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Good luck

craggy solstice
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@graceful creek came in abit late here, but the warhammer marines you maint that with special paint, that adheres to the plastic at once, you brush it on, no spraycans. Use Citadel model paint, the guys from warhammer make it. I painted my warhammer Lord of the Rings fellowship figures with it.

graceful creek
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I got the citadel paints starter set

craggy solstice
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just clean them thoroughly or the paint wont stick

graceful creek
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Clean them with what

craggy solstice
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i used dish soap and a toothbrush to clean them, degrease them and a nitryl glove, if i touch them so they keep clean.

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rubber glove, just don't put you fingers on them after they are clean

trail fossil
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I’m not too familiar with war hammer but you can also use alcohol to clean I believe

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I prefer alcohol when cleaning plastic compared to soap and water I find it cleans better

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That’s just from my experience in auto body

craggy solstice
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it depends, you have metal warhammer figures and plastic ones, i wouln't use alcohol on the plastic figures alcohol makes the plastic weak

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they call the metal ones white metal, but i think the correct term is Pewter.

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I have a metal Sauron from warhammer

trail fossil
craggy solstice
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I have made a few marines myself, but my cousin has made like 5000 of them

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a complete army

trail fossil
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Wow

craggy solstice
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he's been at it for 40 years or so

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he used to make little metal F1 cars too, from coke cans, like 2 cm long painted as john player special, williams marlboro, lotus etc

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like the warhammer obsession it started with a board game, he also had a f1 racing boardgame, hence those tiny models

trail fossil
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That’s actually sick

craggy solstice
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he cut up a rubber gasket ring in tiny disks for tyres