HPLV或無氣噴塗機是否更適合角部/碎屑較多的項目?


1

我正試圖決定購買HPLV噴塗機還是使用無氣噴塗機,以將漆/聚氨酯應用於我的木工項目。最近,我一直在做很多戶外項目,這些項目的形狀有些不規則,例如野餐桌上的板條或格子工作,並且厭倦了這些項目需要的所有筆刷工作,而當我試圖在板條之間或筆刷之間插入刷子時會滴下水一個尖角。

我的問題是HPLV噴塗機或無氣噴塗機是否更適合需要在所有角落都縫上木屑或漆的工作

在木工項目中,總的來說,一個比另一個好嗎?

例如,我剛剛構建了一個項目,該項目在兩個表面上的每個板條之間有1/4"的縫隙,這是一種很難將污點滴入而又無法滴到處的痛苦。

Potting Bench

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(I'm going to assume that what you're asking about is "HVLP" (High Volume, Low Pressure) vs airless sprayers. "HPLV" would be another way to describe what are normally called "traditional" spray guns. Traditional spray guns used full shop pressure, typically 90psi, at the air cap. This meant there is a very fast air stream that results in a lot of material "bouncing" off of the surface and staying in the air. Due to pollution concerns around high-VOC finishes this type of gun was phased out decades ago. HVLP guns choke down the airflow before it gets to the air cap, resulting in a much softer air stream and better material transfer efficiency.)

For woodworking I would generally recommend an HVLP system over an airless system. HVLP delivers a more even application for the thinner finishes used in woodworking. Airless is better for thicker coatings like latex paint that would be used on walls.

An airless sprayer is also much harder to clean out. Airless systems pressurize the material at a stationary base unit and then transfer it to the gun through a long hose. This means that you're cleaning material out of the pumping assembly and all the material left in the hose will be lost at the end of the job (or even in between coats if your deglossing agent settles out before the next coat is applied.) To clean out an HVLP gun you just have to rinse out the cup and a few small internal parts.

Where airless really shines is putting out a huge volume of material. If you're finishing something really large, like a deck or pergola or something then I would consider an airless system. They're designed for things like exterior house painting, where you really want to get heavy materials out very quickly.