Re-Threading Strap Inserts

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elizabethb
elizabethb
QLD
2081 posts
QLD, 2081 posts
11 Nov 2006 9:55pm
The inserts on my Mauricio Pro have been stripped Every single insert is gone and i really don't want/Can't afford a new board,
So what can i use to re-thread them?

Rhys
Spacemonkey!
Spacemonkey!
SA
2288 posts
SA, 2288 posts
11 Nov 2006 10:40pm
Ditto but with 2004 Slingshot SX.
waveslave
waveslave
WA
4263 posts
WA, 4263 posts
11 Nov 2006 8:19pm
quote:
[i]Originally posted by elizabethb

So what can i use to re-thread them?




Insert rawlplugs into stripped holes.
Use stainless steel self-tapping screws to fasten straps.
tobes
tobes
NSW
1000 posts
NSW, 1000 posts
11 Nov 2006 11:47pm
Or if you want to do a bit of metalwork you could drill the inserts and tap a larger thread....
I'm guessing the current size is 5mm, if so you could go to 6mm. You would need a 5mm drill bit, 6mm intermediate tap and 6mm bottoming tap and 6mm bolts to suit.

http://pergatory.mit.edu/2.007/Resources/manufacturing/tapping/tapping.html
www.astrosurf.com/altaz/tapping.htm
Spacemonkey!
Spacemonkey!
SA
2288 posts
SA, 2288 posts
12 Nov 2006 2:01am
All ready taped it one bigger once Damm footstraps.
Cabron
Cabron
QLD
363 posts
QLD, 363 posts
12 Nov 2006 6:02am
You can use a product called a "Helicoil", basically it is a stand-alone thread, it comes with a special size drill, tap and inserting tool . Drill and tap where old inserts are, then screw the "Helicoil" into the new thread(use loctite). When the "Helicoil bottoms out, it breaks for the insertion piece and hey presto.....a new thread. Can be brought from a good hardware store, or engineering products store. Come in most size threads, eg, M5, M6 etc
www.engineproblem.com.au/helicoil.htm
http://www.nationaltoolwarehouse.com/xq/asp/prodid.14331/TID.{8A07620C-B221-4F5C-9835-FECF47D68E13}/qx/product.htm
For some reason the bottom link doesn't work....cut and paste whole link into browser
malfi66
malfi66
QLD
181 posts
QLD, 181 posts
12 Nov 2006 6:02am
I'm no expert Elizabeth, but I would look at drilling out one hole ( I presume you have the ones with a plastic type insert that you put a self tapping SS screw into)to a size about twice the diameter of the current one and use some fibreglass resin (with microballoons if you have some) to embed a SS female insert into the board. The insert must be blind ended though, otherwise the screw could go through to the other side. Also make sure there is a good "key" into the main body of the board ie. make the outside edges of the hole rough. Good luck

Mal
NSW, 4382 posts
12 Nov 2006 12:16pm
If the board is a lower quality manufactured board and it has plastic inserts designed for self tapper screws, and you have stripped them, fill the remaining stripped hole with hot melt glue, drill a pilot hole approx 1.5-2mm and use self tapers of an appropriate guage, I think 8 guage screws need a 2mm pilot, if you are not sure get as carpenter or metal worker to advise you.
Or bring it to me if you are in Sydney.

If you have a board with brass or nickle plated brass inserts, brass is yellow metal, nickel is silver metal, then the only real solution is to "helicoil" it or to tap it out to a larger thread size.
Helicoil kits are not cheap, but they fix stripped threads, and can save a board. I've got a 6mm metric kit in the shop and 6mm and 1/4ww bottom taps.

All quality boards have stainless steel inserts, and use stainless screws because electolytic corrosion does not occur, that corrosion caused by using stainless screws in a brass insert board is what most likely destroyed your threads.

Could even be a warranty claim, faulty manufacturing and materials??

See you local shop, they would be the best place to start looking for help.

Cya and

Goodwinds

Steve
elizabethb
elizabethb
QLD
2081 posts
QLD, 2081 posts
15 Nov 2006 10:52pm
ok i fixed it

- coated screw in vaselene
- filled insert with epoxy
- put screw in insert
- left to harden overnight
- unscrewed it which left a perfect insert!!!!

WOOOOOT!!!!!!!!!!
carbine
carbine
WA
1450 posts
WA, 1450 posts
15 Nov 2006 8:54pm
yeah but it will prolly stuff up again. Epoxy isnt all that resilient as an insert.
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