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Apply Polyurethane Topcoat

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How to Stain and Clear Coat a Wood Handrail | Smooth, Durable Finish with HVLP Sprayer

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What happens here

The stained handrail was moved outside for the topcoat application. The presenter chose to spray it to avoid dust contamination from another ongoing indoor project. He used an Apollo Precision 6 HVLP (High Volume Low Pressure) spray system to apply Renner 2K Poly 851, a water-based 2K polyurethane. Multiple coats were applied (up to five coats), with sanding between each coat using an ultra-fine sanding sponge to ensure a smooth, glass-like finish. An incident occurred where the still-wet handrail was moved too quickly and fell, requiring re-sanding and re-spraying, highlighting the importance of proper drying times.

Goal: Apply multiple durable topcoats for protection and a smooth finish.

Tools and materials

  • Sawhorses
  • Ultra-fine Sanding Sponge (Ecasilk)

What they say

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on the can and then I took it outside to spray it with my um with my Rener 2K Poly 851. Now I took it outside and uh to spray it outside. I was using my Apollo Precision 6 HVL speed sprayer. I could have sprayed it right here, but simultaneously I was working on this project right here also. I sprayed this thing twice. It was completely saturated, you know, with the product um scuff tough. And I was a little bit worried about like the the dust created by doing my handrail that the dust would lift in the air and settle down on this and mess up that. So I took it outside, set it out in the sun where it would dry, you know, just like fast. And so I was able to do I think I actually did five coats on it. You I think I did um four coats on it. sanded in between coats with the ultra fine ecosil sponge just really quickly. It just felt like absolute glass. It wasn't quite dry. Tried to move it into the garage too quickly. I set it down on some trim and it rolled off the trim and so had to take it back outside, resand it and shoot it again. But it just came out absolutely perfect. So, you know, that's kind of what it looks like doing a handrail. I do like you you have the

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