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Adventures in Spraying #1: Surface Preparation

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Blog entry by PurpLev posted 1524 days ago 1218 reads 0 times favorited 9 comments Add to Favorites Watch
no previous part Part 1 of Adventures in Spraying series Part 2: First Spray Job Done (sort of) »

Ah… finally some woodworking at last.

I don’t really have any time or the mind space lately to focus on construction and creation much, and it felt like I was just collecting tools as of late. All with the preparation of ‘one day’ to be able to get to things.

As it happens, I am able to dedicate a little time for some refinishing jobs as I don’t really need to think much for those, and it’s easier for me to get in the zone and just go at it.

First things first. I want to run some test runs with the sprayer, so that I don’t have to do practice runs on the more critical dining table (we bought it, and noticed the finish on it was poorly done with some dry spots, and very light coating that easily rubs off).

I decided to practice on a couple of IKEA stools/chairs/side-tables. although the finish and work I’m going to put on them will probably be worth more than the chairs themselves, they are somewhat easy to work with, and a great practice pieces as I don’t need to worry much about messing them up.

So…

First thing first. surface preparation. I sanded the chairs with 80grit to take off the previous finish, then 150 grit, and finished with 220 to smooth them out and get them ready for the finish:
this

I finally used the PC dust extractor in conjunction with my ROS. previously I had a beef with the DC being too loud, and as a stand alone vacuum it is. but working with the ROS I couldn’t hear it as the ROS overpowered it in loudness.

What I did experience was an amazing no dust in the air or anywhere operation – at all! this DC sucks great! I think I’ll need to give this one an extra star in my review. it earned it. And working with the DC in tool-operated on-off mode is fantastic. It’s not really a needed feature, but it does make things more convenient and simple.

Anyways, chairs are clean, and ready for the finish, and my experimentation in spraying.
Till then,
Peace!

-- ㊍ When in doubt - There is no doubt - Go the safer route.



9 comments so far

View SPalm's profile

SPalm

4791 posts in 2516 days


#1 posted 1524 days ago

I recently received an HVLP sprayer too. I have not turned it on, and I really have no idea on using it, other than reading all kinds of opinions. So this will be fun to watch. Thanks for posting.

I agree, having a DC hooked up to a ROS is great. Stop the dust as early as possible.

I am watching,
Steve

-- -- I'm no rocket surgeon

View HokieMojo's profile

HokieMojo

2098 posts in 2363 days


#2 posted 1524 days ago

i’m hoping to learn spraying in the future. I’m quickly reaching the limits of wipe on finishes and don’t have much interest in brushing. My only holdup is the cost of a compressor. I’ll be looking forward to more in the future. good luck!

View PurpLev's profile

PurpLev

8476 posts in 2283 days


#3 posted 1524 days ago

Thanks, hopefully I can get to spraying this weekend, so be on the lookout.

As for compressor – I’ll talk more about it next time when I detail my experience with the turbine. I think it’s nice with a compressor that you don’t have the air going off when not in use, and the gravity cup that works smoothly till the last drop… but for me I don’t have room for a big compressor, nor the 220 for it, and the turbine being small and portable is very convenient. we’ll see how it performs though. stay tuned.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View BlankMan's profile

BlankMan

1487 posts in 1987 days


#4 posted 1524 days ago

Yeah, as for sanding with a ROS (I have that same one) picking up the dust immediately is the only way to go. Mine is the sander of choice so it gets a lot of use and never without being connected to the vac.

Looking forward to hearing your spraying experience. I’ve done some HVLP staining and poly’ing and with the poly you have to really watch out for runs due to the thin viscosity.

As a side note, I do like that chair/table/stand/whatever design pictured.

-- -Curt, Milwaukee, WI

View Karson's profile

Karson

34870 posts in 3035 days


#5 posted 1524 days ago

Yes get rid of the dust as soon as you can.

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Southern Delaware karson_morrison@bigfoot.com †

View Bob #2's profile

Bob #2

3808 posts in 2656 days


#6 posted 1524 days ago

Good luck with your new system.
Be aggressive with your spray.
Most noviices lay down too little material at first making a real bumpy mess that you can’t recover from.
When you are in the groove, the pass you lay down will be fuzzy at first and settle down in a few seconds to a smooth surface. When you see it you will know it .
A good mix will go drip, dirp , drip commng out of your viscosity cup.
Just say drip, dirp , drip . You can adjust this as you get more finesse.

-- A mind, like a home, is furnished by its owner

View PurpLev's profile

PurpLev

8476 posts in 2283 days


#7 posted 1523 days ago

Thanks Bob – that’s actually some good input that I’ll keep in mind.

As for getting the dust out ASAP – I have always used my old (now sold) shop-vac with my sanders – it was OK, but the 2.5” half-flexible hose, and the performance were nothing like the new 1.25” very flexible hose and much better suction (at least for this purpose). I’m really liking this one!

now looking forward to laying down some finish… :)

Curt – those chairs are very nice indeed, very simple design that fits well in many different environment for many different purposes.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View ellen35's profile

ellen35

2566 posts in 2067 days


#8 posted 1523 days ago

I’ve always been interested in spraying… but my projects are too small… right now.
I have a friend who lives about 1/2 mile away who is a professional cabinet maker and he sprays all the time… and he does my big stuff when I need something done. I watch him… he has older but very high quality equipment. I just hope the new stuff is easier to set up, use and clean up. I’ll be very interested in your experience, Sharon.
Ellen

-- "Don't let the perfect be the enemy of the good." Voltaire

View PurpLev's profile

PurpLev

8476 posts in 2283 days


#9 posted 1523 days ago

Ellen:
1. you are up way too early ;)
2. if you have a friend close by with a full blown setup, I’d swap with you in a heart beat :) but I know what you mean about smaller projects. although you could spray 10 cutting boards at the same time…

we’ll see how this will compare with my previous brush/wipe poly. my main interest will be to compare the sanding in between coats, the drying time of each coat, and the overall look/evenness.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

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