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Urethane rails

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kitcho207
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Re: Urethane rails

Postby kitcho207 » Tue Mar 14, 2017 9:20 pm

Hey. I'm thinking of changing to precast rails.
What did you use for a mould and I am reluctant to use a release agent due to concerns of a reduced bond in the final product.

Also i was previously recommended Shore 80. Now i have done some tests it seems quite soft. Not really happy with it and i bought 1.5kg.

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downunder
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Re: Urethane rails

Postby downunder » Wed Mar 15, 2017 2:43 am

Hm, Shore A or D?
1.5kg is not that much, luckily you didn't get 4kg :)

Have you seen this:

http://boardbuilders-forum.1077691.n5.n ... 34i40.html

kitcho207
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Re: Urethane rails

Postby kitcho207 » Wed Mar 15, 2017 8:38 am

downunder wrote:
Wed Mar 15, 2017 2:43 am
Hm, Shore A or D?
1.5kg is not that much, luckily you didn't get 4kg :)

Have you seen this:

http://boardbuilders-forum.1077691.n5.n ... 34i40.html
its 80A, its a slow cure. Full cure in 7 days so will wait a few more days to see if it gets much harder.

Yes i had a look through the thread thanks. ill have a go out of MDF tonight and see if it releases ok.

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Re: Urethane rails

Postby rtz » Thu Mar 16, 2017 6:16 am

Bump this up to 1:28

hongchew
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Re: Urethane rails

Postby hongchew » Wed May 24, 2017 3:42 pm

downunder wrote:
Fri Jul 10, 2015 2:04 am
I am selling them for AU$15. I guess about US$10 is a reasonable price.

You can see them here: http://shop.shinai.co/
hi, I can't access this website, is this the correct URL?

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downunder
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Re: Urethane rails

Postby downunder » Thu May 25, 2017 2:34 am

Sorry, the site long time gone...I sell only SS inserts atm, pm me if you need some. thx

kitcho207
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Re: Urethane rails

Postby kitcho207 » Thu May 25, 2017 2:40 am

kitcho207 wrote:
Wed Mar 15, 2017 8:38 am
downunder wrote:
Wed Mar 15, 2017 2:43 am
Hm, Shore A or D?
1.5kg is not that much, luckily you didn't get 4kg :)

Have you seen this:

http://boardbuilders-forum.1077691.n5.n ... 34i40.html
its 80A, its a slow cure. Full cure in 7 days so will wait a few more days to see if it gets much harder.

Yes i had a look through the thread thanks. ill have a go out of MDF tonight and see if it releases ok.
That stuff I got was rubbish.
Need to find a better substitute

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Re: Urethane rails

Postby longwhitecloud » Thu May 25, 2017 5:43 am

Wow that vid brings back some boardmaking memories. Hell of an effort without a cnc to cut em out! stay healthly when u make boards - it's about as toxic as it gets..

the whole thing is about stopping delimitation, never found this easy... bonding and materials engineering.


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