Re: 2018 Salomon qst 106.
Hi, i have this ski unmounted and looking for some help to get drill bit size for remounting. No drill bit size or any are printed on the skis and cannot find helpful info.
Got some info from evo.com and says,
“ Power Platform – Edge-to-edge Titanal insert for maximum under foot power and increased hard snow edging.”
Would i need 4.1mm or 3.5mm drill bit?
Thinking of installing dynafit st or salomon mtn bindings.
Thanks in advance.
Lightweight skis may require some unusual mounting tools. For example, some ski specs call for drill bits that are typically used for child skis. Yes, your expensive skinny skis may in fact be designed for children. But hopefully you mount them like an adult by using some of the tools below.
3.5 x 7.5mm Drill Bit - Custom size required for Vapor Svelte and shorter Nano skis (164, 172). Also good for many junior skis.
3.5 x 9.0mm Drill Bit - Step drill bits that can be used with most Movement skis. The 9mm step prevents drilling any deeper.
3.5 x 9.5mm Drill Bit - Nice steel bits that meet the specs of most La Sportiva skis, with the notable exception of Vapor Svelte and shorter Nano skis (164, 172).
3.6 x 9.0mm Drill Bit - This is the bit for Atomic skis with wood cores (including Ultimates), Elan race skis, and folks who like numbers divisible by 0.9.
3.6 x 9.5mm Drill Bit - Black Diamond thinks this is the right bit for putting holes in pre-2020 BD skis. They might know best!
3.8 x 9.0mm Drill Bit - Unusual size preferred by the geniuses at the Trab factory in Bormio. Supplied by the geniuses at Wintersteiger. Also used for Kastle touring skis.
4.1 x 7.5mm Drill Bit - Technically a bit for junior skis, it works great on any thin ski coupled with shallower screws.
4.1 x 9.0mm Drill Bit - The exact specs from most Dynafit, Hagan, & Fischer skis since they have metal plates to drill through.
4.1 x 9.5mm Drill Bit - Some manufacturers like it deep. In this case, they also like metal top plates.
T-Handle Tap - It's recommended to tap the holes for binding screws if they are going through a metal top sheet or reinforcement plate. If you need a 4.1mm wide bit, you will most likely want to tap before screwing with this sharp Wintersteiger tool, unless you like screws with mangled threads.
Torx 20 Tool - Handy T20 driver bit for reaching and turning Dynafit binding screws that are often tucked in close to the housings. Made by Dynafit.
Radical 2 Adjustment Tool - Dynafit's tool for adjusting Radical 2 bindings.
Quiver Killers - Look here.
Hardman Epoxy - The orange double bubble is a slow cure epoxy with a very high shear strength. Flexible, tough, and vibration resistant, this is for bomber mounts and inserts. Cures grey despite being named orange and comes with a mixing stick. 18 hour full cure with a 4 hour work time which is great for anal folks like us. 3.5g per pack, enough for a mount.
Plastic Hole Plug - Little bit of shaped plastic that can be stuffed into a 4.1mm wide drill hole. Insert with epoxy for a water-tight seal. Usually black.
** Please note that you should always double check the specs on your skis and ask the manufacturer if in doubt. Make sure the bit isn't longer than the depth of your skis. Some race bindings have shorter screws so you can get away with shorter bits (e.g. 7.0 or 7.5mm steps).
***Drill bits are from both Wintersteiger and Sun Valley Ski Tools. Based on availabilty.
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Questions & Reviews
12/2/2024
12/2/2024
Hi Kirk,
If it's not written on the ski, the manufacturer is the best resource for drilling instructions. However, you can always use a 3.5 x 9.0 or a 3.6 x 9.0 for drilling mounts. If metal starts coming out during the drilling process, not just wood and fiberglass, switch to a 4.1 x 9.0 to open the ski up more.
If it's not written on the ski, the manufacturer is the best resource for drilling instructions. However, you can always use a 3.5 x 9.0 or a 3.6 x 9.0 for drilling mounts. If metal starts coming out during the drilling process, not just wood and fiberglass, switch to a 4.1 x 9.0 to open the ski up more.
12/3/2024
Hi Lrow,
Thank you for your advice. Drilled with 3.5mm and metal was coming out, so i drilled again with 4.1mm x 9.0 and worked.
Thank you for your advice. Drilled with 3.5mm and metal was coming out, so i drilled again with 4.1mm x 9.0 and worked.
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12/2/2024
I like tapping non-metal screw holes (usually 3.6) to prevent volcanoing. The 12AB tap is only for 4.1 holes, what tap do you recommend for 3.6? Or is there another technique you recommend besides tapping non-metal skis to prevent volcanoing?
12/2/2024
Hector,
The 12AB tap is the size of all the ski screws used in tech bindings. You therefore could use the tap for non metal topsheet holes. The downside is you can also more easily overtorque and strip the screws. The best way to keep top sheets from volcanoing is to make sure the top sheet is counter sunk enough to keep it from pulling up.
The 12AB tap is the size of all the ski screws used in tech bindings. You therefore could use the tap for non metal topsheet holes. The downside is you can also more easily overtorque and strip the screws. The best way to keep top sheets from volcanoing is to make sure the top sheet is counter sunk enough to keep it from pulling up.
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9/10/2024
Is the tap AB #12? Can it be used in conjunction with a 3.6mm bit?
9/13/2024
Shaggy, the tap is for 4.1mm+ diameter holes only, will not work with smaller diameters.
Answer this question:
1/11/2024
What drill bit I should buy for Stockli Nela 96 2024? It has titanal top sheet but soft wood core. Thanks
1/12/2024
Sean,
I would recommend a 4.1x9mm bit.
I would recommend a 4.1x9mm bit.
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1/9/2024
Any idea what drill bit would be recommended for the La Sportiva RSR skis? There appears to be a 3.5 diameter noted on the top sheet, but not a length specified. Thanks!
1/9/2024
Hi Aaron, the 9.0 will work fine with most bindings. Nice to see some of those skis still floating around.
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12/16/2023
I have a new pair of Salomon stance 84 skis, the ski do not have the drill bit size needed labeled on the ski, do you know which drill bit I should use for this?
12/16/2023
Hey Josh, Rule of thumb for mounting a ski if you dont know the diameter of the bit needed is: drill with a 3.5mm and if metal comes out redrill with a 4.1mm diameter bit. All alpine skis are fine to drill with a 9.0 mm length bit.
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12/12/2023
Mounting Voile 3-pin hardwires on a pair of Atomic Maverick 86C. What drill bit should I order? Thanks!
12/12/2023
Nick,
The ski will typically say which bit to use somewhere on the topsheet or sidewall. I don't have a Maverick on hand to check, but if the bit isn't specified, use a 3.5x9. Then, if metal shavings come out of the holes, drill with a 4.1x9.
The ski will typically say which bit to use somewhere on the topsheet or sidewall. I don't have a Maverick on hand to check, but if the bit isn't specified, use a 3.5x9. Then, if metal shavings come out of the holes, drill with a 4.1x9.
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12/6/2023
Hi there,
on my Scott Superguide 88 R skis is written 3.8/9 G2 and I wonder for what G2 stands?
I want to mount Dynafit Speedturn 2 bindings on this skis.
on my Scott Superguide 88 R skis is written 3.8/9 G2 and I wonder for what G2 stands?
I want to mount Dynafit Speedturn 2 bindings on this skis.
12/8/2023
Hi,
For the Scott Superguide 88 you'll use a standard step 3.8 x 9 bit.
For the Scott Superguide 88 you'll use a standard step 3.8 x 9 bit.
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11/25/2023
I have a pair of Salomon Lumen QST skis that does not indicate which drill bit to use for mounting bindings, tried to call Salomon but they never got back to me. which drill bit size should I use for these?
11/25/2023
Hi Josh! For that ski, we recommend the 4.1 x 9.0mm drill bit. Thanks!
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3/30/2023
Hi,
I have atomic backland skis and backland bindings ready to mount. Bought QK sets with tools from here but decided not to use them on this pair.
Skis noted to use 4.1 x 9 drill bit and it looks like the skis have carbon in it so i have 4.1mm drill bit.
When i measures the screws that came with the bindings, only 7.5mm will go in the skis, so would i still drill 9mm or just 7.5mm will do?
Also shall i use epoxy i have 24hr cure) or wood glue? I prefer epoxy and don’t want to worry about remounting but want to ask before i make a mistake.
Cheers
I have atomic backland skis and backland bindings ready to mount. Bought QK sets with tools from here but decided not to use them on this pair.
Skis noted to use 4.1 x 9 drill bit and it looks like the skis have carbon in it so i have 4.1mm drill bit.
When i measures the screws that came with the bindings, only 7.5mm will go in the skis, so would i still drill 9mm or just 7.5mm will do?
Also shall i use epoxy i have 24hr cure) or wood glue? I prefer epoxy and don’t want to worry about remounting but want to ask before i make a mistake.
Cheers
3/31/2023
Kirk,
Doesn't hurt to have an extra mm when drilling, I would drill the full 9mm. It won't adversely affect the ski.
We typically use wood glue, and only use epoxy when reusing old holes or when we're really worried about the bindings pulling out. That said, you could use epoxy no problem if you don't plan on remounting them much.
Doesn't hurt to have an extra mm when drilling, I would drill the full 9mm. It won't adversely affect the ski.
We typically use wood glue, and only use epoxy when reusing old holes or when we're really worried about the bindings pulling out. That said, you could use epoxy no problem if you don't plan on remounting them much.
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1/25/2023
I have a pair of Head Kore 93’s. They have a titanal sheet, but the top sheet says to use 3.5x9.0. Why would that be?
1/25/2023
Lance,
Don't quote me on this, as alpine gear isn't my specialty, but some of the Head Kores are softer, without a titanium mount plate. Those are typically made for rental/demo fleets.
Always go with what the topsheet says!
Don't quote me on this, as alpine gear isn't my specialty, but some of the Head Kores are softer, without a titanium mount plate. Those are typically made for rental/demo fleets.
Always go with what the topsheet says!
Answer this question:
Commenting generally as own too many to comment on any specific size. An absolute must if you plan on mounting your own skis. Do NOT take the risk and use a normal drill-bit - seen far too many people end up pushing all the way through, which these eliminate the chance of doing.
Comment on this review:
11/12/2022
Going from a 4.1x9.5mm bit into a factory recommended 4.1x9.0mm, would that be a major issue? working with trofeo plus on a Dynafit Blacklight 95.
11/14/2022
Thanks for your question, Kevin. In this case, we'd recommend sticking with the recommendation from the factory.
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10/25/2022
Hi! I wonder what drill bit do I need for QST 92 2022 and a tyrolia attack 11.
Thanks!
Thanks!
10/26/2022
Hi Elijah,
The recommended drill bit is typically inscribed on the ski. In the rare case that it isn't, it depends on what the mounting plate is made of. If it's made of fiberglass, carbon, or anything but metal, you'll want to use a 3.5mm wide bit. If it's made of metal, you'll want to use a 4.1mm bit. You could reach out to Salomon about the material of the mounting plate, or drill with the 3.5mm, then, if metal shavings come out, widen it with a 4.1mm.
The recommended drill bit is typically inscribed on the ski. In the rare case that it isn't, it depends on what the mounting plate is made of. If it's made of fiberglass, carbon, or anything but metal, you'll want to use a 3.5mm wide bit. If it's made of metal, you'll want to use a 4.1mm bit. You could reach out to Salomon about the material of the mounting plate, or drill with the 3.5mm, then, if metal shavings come out, widen it with a 4.1mm.
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7/5/2022
Hello Skimo Team,
What size drill bit do i need to order for Atomic Backland 85 UL? Do i also need to buy the tapping tool?
What size drill bit do i need to order for Atomic Backland 85 UL? Do i also need to buy the tapping tool?
7/5/2022
Hi Hamid, you'll want to use a 4.1 x 9mm drill bit for that ski. The titanal plate in the ski is thin enough that you shouldn't need to tap the holes unless you're mounting a G3 binding in which case tapping the holes for the heels can be helpful but is not essential.
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2/18/2022
I am mounting marker squires onto black crows Camox birdie skis, the ski does not list the drill bit size i need for mounting. what size should I use
2/18/2022
Hi Josh,
Your skis should list the required drill bit right on the topsheet. If not, I would use a 3.8 or 4.1 if the mounting plate contains metal, and a 3.6 if it does not.
Your skis should list the required drill bit right on the topsheet. If not, I would use a 3.8 or 4.1 if the mounting plate contains metal, and a 3.6 if it does not.
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1/19/2022
Can you please suggest which tools to use / are needed to mount a meidjo on the scott scrapper 95 (the ski states 4.1mm ang glue G1) what glue should I use (epoxy/wood glue) and do i need to tap? Thank you!
1/20/2022
Hi Nils, for that ski you'll want to use the 4.1x9.5 drill bit and wood glue is perfect. You shouldn't need to tap, but if you're having trouble getting the screws into the ski a tap wouldn't hurt.
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1/5/2022
what brand are the mounting bits? specifically the 4.1x9 and 4.1x9.5?
1/5/2022
Thanks for reaching out, Tom. At the moment, both of those bits are from Wintersteiger. Please let us know if you have any other questions!
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11/23/2021
Thank you for your prompt reply Will.
So the QST 118 has a metal top plate? Do I have to tap it after drilling? If yes, can you recommend a suitable tool for taping please?
Thank you again for your assistance!!
Juergen
So the QST 118 has a metal top plate? Do I have to tap it after drilling? If yes, can you recommend a suitable tool for taping please?
Thank you again for your assistance!!
Juergen
11/24/2021
Sure thing Juergen! It doesn't have a metal top-sheet, but instead has a titanal-reinforced mounting area and solid core construction to grip the screw threads. You shouldn't need to tap the holes since we're not drilling through a true metal topsheet - we don't bother with a tap when we mount QST's in the shop.
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11/23/2021
Hi,
I intend to mount a Marker Jester Pro Binding upon a pair of Salomon QST 118. Can you tell what drill bit size will be the right choice for this ski (diameter and length).
Do you ship to Germany?
Thank you and best regards,
Juergen
I intend to mount a Marker Jester Pro Binding upon a pair of Salomon QST 118. Can you tell what drill bit size will be the right choice for this ski (diameter and length).
Do you ship to Germany?
Thank you and best regards,
Juergen
11/23/2021
Hey Juergen,
I would use 4.1 x 9.5mm drill bit for the QST, and we absolutely can ship to Germany.
-Will
I would use 4.1 x 9.5mm drill bit for the QST, and we absolutely can ship to Germany.
-Will
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