SUPER Easy 3D Print Smoothing & Prep for Paint - Use LESS Spot Putty!
by VanOaksProps
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What this video covers
This short tutorial walks through an accessible, hardware-store-friendly workflow for smoothing and prepping 3D printed parts before paint. The creator demonstrates how to minimize spot putty use by combining strategic sanding across multiple grits with a sandable filler primer. The techniques are demonstrated on a Star Wars droid dome build, making the process tangible and visually clear. All materials are widely available and budget-friendly.
Key takeaways
- ◆Use progressively finer sandpaper grits (80, 120, 220) to knock down layer lines before applying spot putty
- ◆Sandable filler primer helps reveal low spots and reduces how much spot putty is needed
- ◆A wood burning tool can cleanly address seams or surface defects before sanding
- ◆Tack cloth removes dust effectively before priming for a cleaner finish
- ◆Most materials are available at standard hardware stores, keeping costs accessible
Who this is for
Hobbyist prop makers and cosplayers who want a clean, paint-ready finish on 3D printed parts without expensive or hard-to-find products.
Tools mentioned
- • wood burning tool
- • acid brushes
- • lazy susan
- • sandpaper (80/120/220 grit)
Materials mentioned
- • PLA Plus filament
- • air dry spot putty
- • sandable filler primer
- • Weld-On 16
- • gaffers tape
- • tack cloth
⚠ Safety notes
Wood burning tools reach high temperatures — use in a ventilated area and avoid skin contact. Sand in a well-ventilated space and consider a dust mask when dry-sanding.
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