Fantasie 19
Well-Known Member
+1
I'd use aluminum plate - in fact did when I had to mount a boarding ladder... plenty of it pretty cheap on eBay.. the plastic choping board is the business for non-heavy use though...
Plastic chopping board for backing plate!
- Thread starter Zagato
- Start date
+1
I'd use aluminum plate - in fact did when I had to mount a boarding ladder... plenty of it pretty cheap on eBay.. the plastic choping board is the business for non-heavy use though...
sarabande
Well-Known Member
A problem with plastic boards is that nano sized particles are removed whenever you scour the surface clean. This is not a Good Thing.
Wood is much better, and can be sterilised by bleach or hot water.. IIRC There's a report by the University of Wisconsin somewhere.
Wood is much better, and can be sterilised by bleach or hot water.. IIRC There's a report by the University of Wisconsin somewhere.
[70521]
Well-Known Member
I now have visions of Chefs running round on deck screaming, "We're" doomed", in a Private Fazer voice.
Ceirwan
Well-Known Member
Another vote for G10.
Its pretty much the perfect material for backing plates, bed it on some thickened epoxy to stop the plate bridging any unevenness in the GRP.
Its pretty much the perfect material for backing plates, bed it on some thickened epoxy to stop the plate bridging any unevenness in the GRP.
Tamar
Well-Known Member
I had my engine mounts sitting on bits of chopping board for years.
neil_s
Well-Known Member
Another vote for the boatyard skip. My cockpit winches are standing on GRP plinths made from the hull of a sadly departed Caprice sloop.
Zagato
Well-Known Member
OK I will visit Chichester Marina with a hacksaw this weekend and choose a likely candidate
dgadee
Well-Known Member
I cut out rings and use these to make a flat base from epoxy and filler. Seacocks etc are then being fitted to a flat surface.
Yellow Ballad
Well-Known Member
Yes, same here, for my log through hull being plastic I laminated 3x 10mm pieces of G10 which was stuck on with thickened epoxy with a fillet.
fisherman
Well-Known Member
My favourite shipwright, Louis Sauzede, RIP, showed a vid putting sister frames of HDPE in a FV, he said they were also building a new boat with HDPE frames. You can't pull a screw out of it, and I have drilled and tapped it, then inserted a bolt. Then I hauled the bolt out with a nut, then wound it back in, the threads had folded and not stripped. Good enough for non critical stuff.
Used it for a couple of frames in my wooden punt, it can be heated with a gun and turned very tight.
Used it for a couple of frames in my wooden punt, it can be heated with a gun and turned very tight.
fisherman
Well-Known Member
coopec
N/A
All this over concern with bacteria is ridiculous.
How many kids die because they shared an ice-cream with their pet dog!
Hygiene hypothesis: Early germ exposure prevents asthma?
Hygiene hypothesis: Early germ exposure prevents asthma?
Research: Could Birth-Canal Bacteria Help C-Section Babies?
Research: Could Birth-Canal Bacteria Help C-Section Babies?
thinwater
Well-Known Member
From an engineer's perspective, polyethylene (cutting board ) is perhaps the structurally most useless material you could chose. It is weak, creeps over time, cracks under sustained high load. It does not actually distribut e the load in the long term because it bends over time. It only looks like it is working. It is not a structural material.
Place a 50 pound weight on the cutting board, suspended across two sticks. See how it takes a set in a few weeks. Then remember that the preload on the bolts is probably 1000 pounds. Just silly.
FRP and aluminum or SS are good choices. Extra thick (not standard) fender washers can work, as can laying up a few layers of 1708.
---
Sorry if that was harsh. Just the truth as known by all engineers.
Place a 50 pound weight on the cutting board, suspended across two sticks. See how it takes a set in a few weeks. Then remember that the preload on the bolts is probably 1000 pounds. Just silly.
FRP and aluminum or SS are good choices. Extra thick (not standard) fender washers can work, as can laying up a few layers of 1708.
---
Sorry if that was harsh. Just the truth as known by all engineers.
coopec
N/A
Alex_Blackwood
Well-Known Member
Wood has natural anti-biotic properties and can be kept clean with a mild detergent. Always been the best!
pvb
Well-Known Member
PaulRainbow
Well-Known Member
coopec
N/A
Contrary to popular belief, plastic cutting boards are not automatically more food-safe than wood. It’s assumed that because wood is a porous surface and plastic isn’t, plastic boards are more resistant to bacteria. However, this doesn’t take into account the scars a plastic cutting board will get from daily use letting harmful toxins and bacteria in. So, in essence, wooden boards are actually a lot more sanitary in the long run.
Plastic Vs Wooden Chopping Boards: Which is better? - Eco Food Boards
Plastic Vs Wooden Chopping Boards: Which is better? - Eco Food Boards
coopec
N/A
Three times, since post #12
Try and stay awake at the back
Paul
I'm putting lead ballast in the yacht and I dropped an ingot on my right foot. Fortunately nothing seems to be broken but I'm not feeling too bright.
Sorry!
Ian_Edwards
Well-Known Member
I'd be very wary about using an aluminium backing plate, if there is any chance of getting a saltwater leak.
What remains of an aluminium backing plate
I repaired using chopping boards as a backing,
The screws are just temporary, to hold the board in place while the epoxy thickened with micro fibres cured.
After covering with multiple layers of epoxy glass and fairing
The choice of chopping boards was driven by what was available, I was in NSW, Australia, I'd have prefered to use a GRP sheet.
It's a 16ft Corsair dinghy, still going strong many years after the repair. The boat is about 50 years old and was still using the original sails until we replaced them last year.
I've also had an Aluminium backing plate fail on my Southerly 46RS. The plate was reinforcing the turning block on the lifting keel (2.5tons), and failed because the aluminium corroded and split open the GRP it was encapsulated in.
What remains of an aluminium backing plate
I repaired using chopping boards as a backing,
The screws are just temporary, to hold the board in place while the epoxy thickened with micro fibres cured.
After covering with multiple layers of epoxy glass and fairing
The choice of chopping boards was driven by what was available, I was in NSW, Australia, I'd have prefered to use a GRP sheet.
It's a 16ft Corsair dinghy, still going strong many years after the repair. The boat is about 50 years old and was still using the original sails until we replaced them last year.
I've also had an Aluminium backing plate fail on my Southerly 46RS. The plate was reinforcing the turning block on the lifting keel (2.5tons), and failed because the aluminium corroded and split open the GRP it was encapsulated in.
