- -10%
Two merged LINE CUTS by using our professional sewing system, same as for our sewn loops.
WARNING: this product requires the accompanying purchase of any LONGLINE WEBBING or a LAST LINE CUT.
If you are not happy with your purchase you can always return the product
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LAST LINE CUTS
€7.93 |
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COURRIER PICK-UP FOR SEWING SERVICES
€16.63 |
We really don't like throwing material away! And especially not slacklines.
By merging two pieces of webbing, using our sewn system stitch, we are able to create a new, safer and re-usable Slackline.
If for some LINE CUTS from our shop or as a repair service for your own webbing.
You can therefore find in our shop the LAST LINE CUTS, which are great to purchase as a testing piece of your desired slackline and that with a -20% discount. Great if you want to have a first test feel for a webbing, before buying a bigger length.
Sure! you can create your personalised, fun length of all sorts of different webbings.
WARNING: we can't sew different webbing's widths, in example 17 mm SKYDIAMOND with 25 mm JOKER.
Yes, we offer now also a repair service, but a prior review of your webbing by our technician is inevitable! Please check below the conditions under which we can accept a repair of your webbing.
In general, webbings exposed to sun for a continuous period of 6 months or the equivalent of a maximum of 10 years from the time of purchase, are considered at the end of their life. This total webbing life time might also vary according to other aging agents such as e.g. contact with abrasive surfaces or chemicals, etc.
Based on this, our technician will only carry out repairs if your webbing meets the following conditions:
If in doubt about the condition of life of your webbing, don't hesitate to send us an email with what you know, including some photos of your webbing.
You can send us your line or purchase the dedicated PICKUP AND RETURN SHIPPING FOR SEWING SERVICES.
We repair all webbings that meet the above mentioned requirements.
Hi! Does the 50 meter longline kit come with webbing that has 2 sewn loops? Thanks! SIGMA is an element of statistical calculations, which allows to display a products’ guaranteed strength value throughout its manufacturing process. Therefore, it is related to product safety.
During the testing process, the greater the differences between the 10 recorded values, the higher turns out the sigma value.
For example, for 10 carabiners tested, their ten recorded values are usually different and not the exact same:
24,9 | 25,9 | 26,2 | 25,6 | 25,8 | 24,7 | 25,5 | 24,7 | 26,0 | 25,7 kN
So which value to take into account to display the MBS (Minimum Breaking Strength) value?
We first calculate the average:
(24,9 + 25,9 + 26,2 + 25,6 + 25,8 + 24,7 + 25,5 + 24,7 + 26,0 + 25,7) / 10 = 25,5 kN
We then calculate the variance:
24,9 - 25,5 = - 0,6 (-0,6)2 = 0,36
25,9 - 25,5 = - 0,4 ( 0,4)2 = 0,16
...and so on for the 10 measured values.
We add those 10 results:
0,36 + 0,16 + 0,49 + 0,01 + 0,09 + 0,64 + 0,064 + 0,25 + 0,04 = 2,68
And we create the average:
2,68 / 10 = 0,268
The variance is even to : 0,268
SIGMA (standard deviation) = square root of 0,268 = 0,5176
The maximum value displayed on the carabiner would be:
average of 10 carabiners = 25,5 kN
SIGMA = - 0,5176
____________________________
Displayed Value = 24,0724 kN
What you should know in particular about the 3 SIGMA safety margin?
We use the 3 SIGMA method to calculate the MBS.
We multiply the SIGMA for 3 (this is why it is called “3 SIGMA”) to boost the prudency in the MBS calculation.
Taking the 10 previous carabiners as an example:
The average of those 10 carabieners is 25,5kN
3 SIGMA (3 x 0,5176) = - 1,5528
_____________________________
Displayed value = 23,0472 kN
Our choice aims to maximize the safety of our users while using our products.
Source @Petzl
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