Screws: In or out?
Posted: Tue Oct 25, 2016 8:02 pmI've seen a number of build threads here where the screws on the exterior wood are removed after the glue dries. What's the thinking here?
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Screws: In or out?
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Posted: Tue Oct 25, 2016 8:02 pmRe: Screws: In or out?
Posted: Wed Oct 26, 2016 7:17 amAre we talking about a "woodie" type of build? If it is, there still needs to be a plug to fill the hole. In boat building a trunnel is used to fill the hole & plug the surface.
Re: Screws: In or out?
Posted: Wed Oct 26, 2016 7:40 amI'm talking about basic building. I see people attaching the roof to spars with glue and screws then remove the screws and fill the holes. I was wondering what's the downside of leaving the screws in?
Re: Screws: In or out?
Posted: Wed Oct 26, 2016 8:08 amI see no downside to leaving in the screws. It seems that it would be a benefit structurally. Many of the folks on this forum are top woodworkers and they are showing off craftsmanship beyond what I'm capable or want. I think that's why screws are removed.
T
T
Re: Screws: In or out?
Posted: Wed Oct 26, 2016 11:21 amI was wondering what's the downside of leaving the screws in?
If your are sheathing in aluminum, those screws need to be covered or removed (in my opinion) to prevent dissimilar corrosion.
T
Re: Screws: In or out?
Posted: Wed Oct 26, 2016 12:11 pmtony.latham wrote:I was wondering what's the downside of leaving the screws in?
If your are sheathing in aluminum, those screws need to be covered or removed (in my opinion) to prevent dissimilar corrosion.
T
That makes sense. I'm not planning in using aluminum. I'm considering PMF or actual fiberglass and paint like Becky's Shagwagon.
Re: Screws: In or out?
Posted: Wed Oct 26, 2016 12:20 pmWith a little decorative rosette you can make a statement just make sure your spacing is uniform and pleasing to the eye.
Re: Screws: In or out?
Posted: Wed Oct 26, 2016 12:55 pmtony.latham wrote:I was wondering what's the downside of leaving the screws in?
If your are sheathing in aluminum, those screws need to be covered or removed (in my opinion) to prevent dissimilar corrosion.
T
For the life of me, why would anyone remove screws from their spars?
Mechanical fasteners have their merits, along with glue.
Just counter sink them and use Bondo, no problems that way.
DannyRe: Screws: In or out?
Posted: Wed Oct 26, 2016 1:48 pmhalfdome, Danny wrote:tony.latham wrote:I was wondering what's the downside of leaving the screws in?
If your are sheathing in aluminum, those screws need to be covered or removed (in my opinion) to prevent dissimilar corrosion.
T
For the life of me, why would anyone remove screws from their spars?
Mechanical fasteners have their merits, along with glue.
Just counter sink them and use Bondo, no problems that way.
Danny:
He didn't specify spars.
screws on the exterior wood are removed
Tony
Re: Screws: In or out?
Posted: Thu Oct 27, 2016 9:29 amtony.latham wrote:halfdome, Danny wrote:tony.latham wrote:I was wondering what's the downside of leaving the screws in?
If your are sheathing in aluminum, those screws need to be covered or removed (in my opinion) to prevent dissimilar corrosion.
T
For the life of me, why would anyone remove screws from their spars?
Mechanical fasteners have their merits, along with glue.
Just counter sink them and use Bondo, no problems that way.
Danny:
He didn't specify spars.screws on the exterior wood are removed
Tony
azgreg wrote:I'm talking about basic building. I see people attaching the roof to spars with glue and screws then remove the screws and fill the holes. I was wondering what's the downside of leaving the screws in?
What difference does it make?
Seems like I've heard that phrase lately
If you compromise wood fibers with a screw leave it in.
DannyRe: Screws: In or out?
Posted: Thu Oct 27, 2016 4:23 pmI used screws and then removed them when skinning the curves on my camper. The wood wouldn't stay down with brad nails alone so something more substantial was required. I also used some scrap pieces below the screws to 1) prevent damage to the actual skin and 2) smooth out the curve. The skin would've come out lumpy without even pressure around the screws. Since I used those scrap pieces the screws had to be removed. I could've reinserted them, but countersinking in 3mm thick wood probably wouldn't have worked too well.
Re: Screws: In or out?
Posted: Fri Oct 28, 2016 9:06 amI removed the screws as they don't expand the same rate as the wood. Boat maintenance has taught me that screws and nails are the first point of water intrusion that leads to rot.
I remove all metal fasteners and fill the holes with glue, as the glue bond is much stronger and doesn't let water in
I remove all metal fasteners and fill the holes with glue, as the glue bond is much stronger and doesn't let water in