Questions tagged [polyurethane]

Polyurethane is a synthetic resin used in some modern finishes.

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1answer
40 views

Should I use a router before or after my finish is done?

First time poster so forgive me if my question is worded poorly. I have a wood art piece that I'm coming close to finishing. I plan on routing out the back of the piece to lay in some LED lights to ...
2
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1answer
44 views

When can I sand water based polyurethane?

I've applied Water Based Varathane Ultimate Polyurethane to some desktops. I intend to apply 3 coats. The instructions say drying time is 2 hours. Can I sand the finish after 2 hours or do I have to ...
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0answers
37 views

I'm looking for a good finish for goblets and shot glasses [duplicate]

So I have started turning some goblets and shot glasses, and I'm trying to find a good finish for them that can be nice and glossy, but doesn't need constant reapplication. I'm pretty sure that ...
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1answer
41 views

Refinishing over different polyurethane

I have a lot of door and window trim that I finished with a satin polyurethane. I recently started a project to finish trim in another location in my house. I somehow managed to use a different satin ...
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0answers
64 views

Best way to glue two finished surfaces

What would be the best way to glue two surfaces which have already been finished with Danish oil and then wipe-on poly? One surface would be the cut edge of ply, the other surface would be solid wood....
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2answers
193 views

A beginner's question about sanding, stain, and polyurethane for a SMOOTH finish

I'm doing to hobby pieces using 3/4" pine ply. On my faces, I've sanded with 80, then 120, then finish with 220 using random orbit sander. To the touch, it's very very smooth. I'll give it a good ...
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0answers
35 views

Spreading water-based Varathane that is 3 times thicker

I used water-based 3X Varathane on a table top I am refinishing. It is very difficult to spread because it is so thick. It is supposed to be "self-leveling". I cannot brush it on evenly because it ...
2
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0answers
510 views

How to fill in holes and gaps after applying polyurethane

I'm finishing a very rough piece of scrap wood for use as a tabletop and to practice applying polyurethane. I've since found that the holes and gaps aren't really "filled" by the material and that I ...
4
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1answer
54 views

Is this mask sufficient to filter polyurethane fumes?

I'm learning how to apply polyurethane and am very bothered by the strong fumes. Is this mask from Harbor Freight sufficient protection for health purposes and will it help to filter out the smell? ...
5
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1answer
56 views

Applying finish over furniture repair wax

I have a panel made from recycled lumber - there are a number of 10mm holes from some sort of fixtures in the woods previous life. These are not nail holes, but clean drilled out holes. I'm not ...
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1answer
203 views

Can I put a clear polyeurethane coat on top of teak oil?

I have an outdoor bench that came with instructions to coat it with teak oil once a year. I've done the teak oil one year so far. If I put on another coat of teak oil this year, do you think I can ...
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1answer
264 views

Water based oil modified polyurethane finish beading when applied over stain on pine

I applied Minwax Wood Finish penetrating stain to white pine cabinet. Wiped stain thoroughly, waited 60 hours before attempting to apply Minwax water based, oil-modified polyurethane, using synthetic ...
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2answers
92 views

Top coat poly makes other sides rough

We're restoring some old furniture - sofas with a lot of carving, whole wood book shelves, et al. We've stripped the old varnish and are redoing the job with poly. We did 2 coats of PU sealer and 2 ...
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1answer
60 views

Moisture Blushing or Inadequately Mixed Satin Wipe-On Poly?

In the final step of finishing my speakers I was putting satin wipe-on poly over my danish oil. The danish oil sat for 6 days on my walnut paperbacked veneer in my basement with a dehumidifier going. ...
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2answers
111 views

Polyurethane a box (vertical sides)

I was originally going to use spray lacquer for my speaker cabinets which are essentially large cubes. However, I've switched to brush on Poly. Is it possible for me to apply the poly on the ...
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0answers
38 views

Staining veneer in humid weather

I am working in my garage in Wisconsin in August so needless to say it’s super muggy/humid. I’ve veneered my speaker cabinet and I’m getting ready to stain. Should I bring in the cabinets and put ...
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1answer
38 views

Spray on Lacquer for Vertical Surface

I have a rectangular speaker cabinet (basically a box). Can I use spray lacquer and spray all sides at once? Otherwise I have to account for a lot of overspray.
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0answers
44 views

Sun damaged polyurethane-finished dining table

So I have this Italian made marquetry dining table which has a polyurethane finish. I acquired this as a used item and I noticed after purchase that in the light I can see streaked areas where it has ...
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1answer
1k views

Can I use linseed oil and water-based polyurethane on opposing sides of a 1/2" board?

I know that linseed oil and water-based polyurethane won't work together. But I have 1/2" poplar paneling that I am installing in my van and am hoping to get the best of both synthetic and natural ...
5
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2answers
2k views

Polyurethane clear coat is thickening to a jelly in the can!

I've been refinishing our wood cabinet doors. I've sanded down to the bare wood, then applied a pre-stain. After 1 coat of stain I'm putting on 2-3 coats of polyurethane clear coat. I'm using mineral ...
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0answers
358 views

Pore/Grain Filler Over Danish Oil

I have two slabs: redwood some kind of hard wood that I think resembles a red gum wood I have coated them in Danish Oil and this coating has been allowed to dry for over 10 days. My long term goal ...
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0answers
76 views

What finish should I use on wooden jewellery?

So, I'm carving a wooden pendant for my girlfriend. I want the finish to be satin. However, since she plans on wearing it all the time, I want it to be water resistant. I do not want the wood to get ...
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1answer
779 views

Should I use a conditioner on maple before applying tung oil finish or polyurethane?

I am getting to the end stages of building a desk out of maple. Should I use a wood conditioner on my maple wood before applying tung oil finish or polyurethane? I have tried a bit of both on a test ...
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2answers
2k views

Using Tung Oil and Polyurethane on Maple?

I am getting close to completing a desk I am building. This has been a very ambitious project for me as this is the first time I have ever built any furniture (shelving not counted) and this is a ...
3
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2answers
448 views

How are bubbles avoided when brushing on Polyurethane?

I have used polyurethane a few times. Each time I've tried to be more careful about creating bubbles, but the finish was still riddled with bubbles. Just the act of dipping the brush in the can and ...
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1answer
620 views

When working with polyurethane glue, how long does one have to clamp the components?

I am going to be building some shutters for one of our windows and because of its location, planned on using polyurethane glue, specifically Dap Polyurethane Construction Adhesive. Each shutter will ...
2
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1answer
476 views

Rough polyurethane job.

I applied poly after staining what I thought was a smooth surface pine board. Rough when first coat dried. Sanded it lightly and is fairly smooth. I want to apply another coat but dust is sticking to ...
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1answer
1k views

Minwax poly stain still sticky

I'm new to this forum and new to woodworking as well...I'm renovating my daughter's bathroom and she wanted the cabinets stained darker. I thought that would be pretty simple (😳😩) and inexpensive so ...
3
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2answers
847 views

Do I need to add natural stain before applying polyurethane for natural finish?

I have an unfinished desk and want to keep the natural color of the wood but I want to protect it with a clear polyurethane finish. I am wondering if I need to (or is it preferable to) add a clear or ...
4
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1answer
739 views

Didn't let wood dry between coats of stain & poly. How to correct?

I attempted my first ever woodworking project this weekend and thought it was going smoothly until I realized I was supposed to let the minwax oil based stain dry for 4-6 hours between coats. I had ...
2
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1answer
2k views

What can be done to correct wipe-on poly that is still tacky after 24 hours?

The project is an oak dining table top. The varnish had worn off in spots. After stripping a few spots that had been exposed for longer still had a gray, aged look. It is a veneer so I didn't want to ...
3
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2answers
4k views

How many coats of polyurethane?

I am finishing oak trim (casing, baseboards, and quarter round). I am using Minwax fast drying polyurethane clear satin. The instructions call for 2 or 3 coats. If I ensure that the 1st and 2nd ...
3
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2answers
13k views

Water-based polyurethane Vs. Oil-based polyurethane

What are the key differences between a water-based polyurethane and a oil-based polyurethane? How would one be better than the other? What lasts longer on wood, penetrates, Etc. When should there be ...
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2answers
55 views

Clean and protect cabinets and railing [closed]

Wanted to clean and protect the cabinets and railings in our house. They feel very dry to touch and ones in the bathroom look dirty. But first I want to understand what kind of wood was used for these....
4
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1answer
242 views

Best TOUGH clear finish for fragile wood-shaving flower?

I made a rose from Poplar planing scraps; the arranged, concentric, shavings are tissue-paper thin. I wanted to somehow seal and finish the flower so that it would have some degree of durability, ...
7
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1answer
329 views

What is causing this poor refinishing result and how do I fix it?

I followed the procedure of stripping, sanding, staining and then polyurethaning the top of two antique, about 75 years, dressers. The one came out beautifully. The other has questionable results. ...
4
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1answer
95 views

polyurethane finish krinkles?

I've been having the hardest time with one little section of a table I am finishing. I am using Varathane oil based clear polyurethane. I've been spraying it on with a 20% turpentine / 80% varathane ...
2
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1answer
72 views

Waterproofing Wood With Left Over Polyurethane (Aesthetics irrelevant to project)

So I know the off-the-cuff answer is you cannot (or should not) use Indoor Rated Poly to weather proof wood as the sun's UV will discolor the wood and other issues visually. This wood though is being ...
2
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1answer
589 views

Blotchy Water based Poly

Got new unfinished dark walnut cabinets. Used water based poly after a thorough light sanding and cleaning. After two coats the cabinets look blotchy. What can i do? Thinking about sanding them down ...
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1answer
1k views

Removing oil-based polyurethane residue

I have been working with polyurethane often and I get some on my hands but mostly my brush. I try to wash it out right after I am done using it but it does not seem to work, even with simple soap. ...
10
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2answers
16k views

Why does my workpiece become rough again after applying polyurethane varnish when it wasn't before?

I am in the process of applying polyurethane varnish to a finished workpiece and have been sanding between coats as advised by the manufacturer instructions. I initially wondered why this was ...
3
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1answer
113 views

Is low-formaldehyde plywood important if the wood will be finished with polyurethane?

I'm willing to pay a premium for low-VOC materials to improve indoor air quality. Recently, I've been using PureBond plywood, which uses a soy-based adhesive instead of urea formaldehyde. This surely ...
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1answer
2k views

Can I salvage a paint brush with dried polyurethane on the bristles? [duplicate]

I bought a nice Wooster Pro nylon brush to use for applying water-based polyurethane to some projects. After the last application, I forgot to wash the brush and it has since dried and hardened. I can ...
2
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2answers
800 views

Polyurethane rub down problem!

I'm in the final stages of finishing an oak poker table. I have applied 3 coats of deep mahogany oil, which went on OK but didn't really soak in well after the first coat. Now I am applying 3-5 coats ...
9
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3answers
15k views

How do I de-nib polyurethane after it dries but still maintain its finish?

Sometimes when I apply polyurethane, for whatever reason, it's not completely smooth. Maybe a brush mark here and there, or a couple little nibs, etc. The advice I see often is to sand the area ...
6
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1answer
1k views

What is the difference between wiping polyurethane and wiping varnish?

I make my own wiping polyurethane by thinning regular oil-based poly from home improvement stores with mineral spirits. According to Bob Flexner, the only difference between this and polyurethane-...
8
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5answers
357 views

I polyed my paintbrush then procrastination left me in a predicament

I was using a nice paintbrush with polyurethane and it seems that I set it down then forgot to clean it. I have since run into it and I have a shiny, relativity tough, paintbrush now. Needless to say ...
4
votes
1answer
584 views

Flat polyurethane finish for tabletop

To protect a reclaimed table top, could I use gloss poly as the first coat and then top it off with a flat poly? I've heard that gloss gives better protection, but I want a flat finish.
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1answer
15k views

Minwax “One Coat Polyurethane” — does it work? [closed]

I stumbled across Minwax's One Coat Polyurethane on their website. It purports to built a finish equal to 3 coats of regular poly in a single application. I'm curious if anybody has used it and has ...