FAQs

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What glue or adhesive do you recommend for Type 1 Bonded?

The Type 1 Bonded Fix is made of ABS, which is a relatively good plastic for bonding, and there are many structural adhesives suitable for a wide range of panel materials: e.g. a 2-part structural acrylic adhesive, a matched adhesive for solid surface (Corian®, Hanex®, etc.) or solvent weld for bonding to acrylic.
Epoxy resins, such as Araldite also work well.
We have also used MS polymer adhesive mastics with great sucess, such as Parabond 500, Soudal Fix-All High Tack/Turbo, Everbuild Stixall, Evostik Sticks like sh*t, to name a few; these are particularly easy to use, tough, strong and odour-free.
Generally, the button fixing screw will fail before any of the the adhesives mentioned give way.
A Type 1 Bonded has been tested (rebated in Corian® with matched adhesive) to destruction at an astonishing 625Kg, when the screw holding the button sheared!
When ‘face-fixed’ (ie. not rebated) using Parabond 500, the plastic of the Fix fails (not the adhesive bond) at approx. 200Kg.

I use screws which are not those specified – can I use them to attach the Buttons or the Button-fix?

Yes, you probably can, but you will need to try them out to see. Please ensure that the heads of any screws used in the Buttons, or in the rebated Fixes, are flush, or just below the surface of the mouldings, so that they do not clash. See the ‘Videos’ section of the website for recommended fixings, or for more detail download the ‘Suggested Fixings for Buttonfix’ PDF from the Useful Information page.
The limiting factor dictating the maximum load is, in most cases, the pull-out load of the fixing screws, and the strength of the materials being mounted. Therefore, the fixings used should be the largest practical, given the thickness of the panel to be mounted. For Type 1 Fixes on thin panels, Varianta Euroscrews (CSK Ø6.2mm for Ø5mm pilot holes) are recommended.

What is the safe loading?

Button-fixes are very strong, but there are too many variables to be specific about a safe loading for your individual application.

For thinner panels and low-strength materials like particle-board, the limiting factor dictating the maximum load will be the pull-out strength of the screw fixings. Therefore, the fixings used should be the largest practical, given the thickness of the substrate/panel to be mounted. Assuming that the substrates/panels are strong, the appropriate fixings are used and applied correctly, sufficient Button-fixes are used and a conservative safety margin is applied to the test data available on this site, then you should have no problems with weight loading. This will be particularly true if the panels are vertical and there is no cantilever component to the loading. However, if the panels are not vertical and/or there is a cantilever load, then you should rigorously test the application to your own satisfaction before proceeding.

For Type 1 Fixes, ‘Buttonfix strength testing report’ is available here.

Also, have a look at a typical example of the independent load testing carried out on the Type 1 Fix here.

The Type 2 Fix is ideal for applications where the emphasis is on ease of fit rather than strength. Assuming that the screws and substrate are properly matched, a vertical panel under no other loading than its own weight, fixed with four Type 2 Fixes, can safely weigh 80kg. Other configurations should always be tested by the user.
Each Type 2 Fix requires approximately 12kg force to separate the Button and Fix; this should be taken into account when designing your installation and defining your safety factors. Type 2 Fixes should only be used on vertical panels or in applications where the weight of the panel does not act to separate the fixing. In critical applications, always use the safety cord accessory.
Please note that safety cords are sold separately from the Button-fixes.

Can I use Varianta Euroscrews?

The orange Buttons are designed for this purpose and will accept countersunk Ø6.2mm Euroscrews for Ø5mm pilot holes. While both the Type 1 and Type 2 Fixes are not specifically designed for use with Euroscrews, they can function satisfactorily. For instance the Ø6.2mm Euroscrews are a tight fit in the Type 1 Fix holes, but they install readily when the Fix is in-situ with the pilot holes in the panel to guide them. The Type 2 Fix will only accept Ø4.2mm Euroscrews for Ø3mm pilot holes.
For more detailed information, including screw length/panel thickness guides, please dowload the ‘Suggested Fixings for Buttonfix’ PDF from the Useful Information page.

What is the best type of screw fixing for thin panels?

Varianta Euroscrews are useful for giving good strength in thin panels, normally in particleboard. The orange Buttons are designed to accept countersunk Ø6.2mm Euroscrews for Ø5mm pilot holes. While both the Type 1 and Type 2 Fixes are not specifically designed for use with Euroscrews, they can function satisfactorily. For instance the Ø6.2mm Euroscrews are a tight fit in the Type 1 Fix holes, but they install readily when the Fix is in-situ with the pilot holes in the panel to guide them. The Type 2 Fix will only accept Ø4.2mm Euroscrews for Ø3mm pilot holes. Please see the Videos page.
For more detailed information, including screw length/panel thickness guides, please download the ‘Suggested Fixings for Buttonfix’ PDF from the Useful Information page.

Can Button-fixes withstand shock loading?

Type 1 Fixes can carry a significant cantilever load; as a general rule of thumb, it is a good idea to keep the cantilever distance, that is the shelf depth, shorter than the height between the Fixes. In most circumstances, the screws will pull out of the panel before the Button-fixes fail. Please download our load test results from the Useful Information page on this website. This should help you to specify the number of Button-fixes to use for a given load. However, we strongly recommend that you perform your own tests for your specific application and the materials that you intend to use and that you use a generous safety factor.

Type 2 Fixes are designed as a push/pull fit, and will therefore not take a cantilever load. Assuming that the screws and substrate are properly matched, a vertical panel under no other loading than its own weight, fixed with four Type 2 Fixes, can safely weigh 80kg. Other configurations should always be properly tested by the user to their satisfaction.
Each Type 2 Fix requires approximately 12kg force to separate the Button and Fix; this should be taken into account when designing your installation and defining your safety factors.
Type 2 Fixes should only be used on vertical panels or in applications where the weight of the panel does not act to separate the fixing. In critical applications for Type 2 Fixes, always use the safety cord accessory.
Please note that safety cords are sold separately from the Button-fixes.

When would I use Varianta Euroscrews in the Buttons?

Varianta Euroscrews are useful for giving good strength in thin panels, normally in particleboard. The orange Buttons are designed to accept countersunk Ø6.2mm Euroscrews for Ø5mm (0.197″) pilot holes.

For more detailed information, including screw length/panel thickness guides, please dowload the ‘Suggested Fixings for Buttonfix’ PDF from the Useful Information page.

What screws or fixings should I use?

See the ‘Products’ section of the website for recommended fixings, or for more detail download the ‘Suggested Fixings for Buttonfix’ PDF from the Useful Information page.

The limiting factor dictating the maximum load is, in most cases, the pull-out load of the fixing screws and the strength of the materials being mounted. Therefore, the fixings used should be the largest practical, given the thickness of the panel to be mounted. For Type 1 Fixes on thin panels, Varianta Euroscrews (CSK Ø6.2mm for Ø5mm pilot holes) are recommended.

Can I use machine screws?

Yes; the lime green countersunk screw Button will accept an M5 countersunk screw. The rebated Fix will accept M4 countersunk screws, while the surface-mounted Fix will accept M4 pan head screws, ideally with washers, or for maximum strength M5 pan head screws, although they are a tight push fit in the fixing holes.

Can I space off the Buttons?

Yes, generally using M5 x 25 steel ‘penny’ washers; however, if the Buttons/Fixes are binding due to angular misalignment, it is best to use washers that are within the ‘footprint’ of the Button (i.e. Ø18mm or less, for example part number 1000750000VR here) which will allow more angular tolerance. Bear in mind that spacing off the Buttons will increase the bending forces on the button fixing and reduce its weight carrying capacity.

Can I fix Button-fixes to metal structures?

You can use Ø4.8mm pop rivets, with washers to protect the plastic of the Fixes, and/or self tapping screws, but you will need to satisfy yourself of the fixing type and loadings by thoroughly testing the application. Recessing the Fixes into sheet material or tube would be possible, but would require machining with appropriate equipment.

Can I fix to plasterboard?

For maximum strength on plasterboard, fixing through to studs or noggings is best. If this is not practical, direct fixing onto the plasterboard is possible, but the maximum loadings must be reduced significantly.
The next best option is to attach the Fix to the plasterboard using expanding metal fittings, such as Rawl M5 Interset sleeve fixings. These have the advantage of being demountable, as well as having a good load capacity.

If necessary, and if maximum load is not so critical, the Button may be fixed to the plasterboard; Interset fixings may be used for fixing the buttons, but the standard pan head M5 screw will need to be substituted with a countersunk M5 screw of a suitable length. Alternatively for fixing the Buttons, fixings such as the Rawl ‘4ALL’ universal plug (Ø8mm for a Ø5mm screw) may be used. Using a Ø30mm M5 penny washer under the button helps spread the load.

Can I fix panels directly to plaster, brick or concrete wall using Button-fixes?

In these circumstances we recommend fixing levelled battens to the wall first. If this is not possible, please be aware that the wall may not be flat, and you may need to use washers to both space the Buttons off the wall for levelling, and to keep them parallel to the panel: although there is a degree of flexibility and tolerance in Button-fix, misalignment of the Buttons and Fixes may cause binding, and difficulties in engaging or removing the panels.

Can I use Button-fix to mount Corian, Staron or solid surface panels?

Yes, the Type 1 Bonded was developed with solid surface materials in mind; a single Fix has been tested rebated into Corian, using Corian glue, to an astonishing 625Kg at failure!.. and the screw attaching the Button sheared before anything else..

Even face-fixed to Corian, the Fix failed at over 200Kg in shear.

Alternatively use M4 ‘Squirrel’ inserts (www.squirrels-uk.com), or M4 Rampa BAN/BAV inserts (shopen.rampa.com) to attach Type 1 or Type 2 Fixes: (use with suitable washers when using pan head screws). The buttons ideally require M5 CSK screws for maximum strength; use M5 Rampa BAN/BAV inserts. For reduced loadings, the Buttons may also be fixed using M4 CSK screws.

Can I use Button-fix in outdoor applications?

Yes, with the proviso that the Button-Fixes are not subject to direct sunlight (Ultra Violet light will weaken all plastics with age; however in most situations as an ‘invisible fix’, the Button-fix fittings will be shielded from direct sunlight) The Button-fix fittings are moulded in a glass filled nylon polymer that is tolerant of wet conditions and has good resistance to acid and alkalis. Please make sure that you use stainless steel screws into suitable materials.

External panels will be subject to greater fluctuations in temperature (especially if subjected to direct sunlight); on larger panels this may cause problems, as the expansion may cause buckling/increased stress on the fixings. Always ensure the design (length/material) of the panels is taken into account, and the Fixes are mounted to best accomodate any expansion; for instance, the orientation of the Fix should be parallel to the longest side: Therefore, a long horizontal panel is best intalled using fixes oriented horizontally, which gives far more tolerance for any expansion. Always ensure that the panels are secured with some kind of stop, particularly if mounted horizontally, to avoid any possibility of detachment.

Can I use Button-fix to fix glass panels or mirrors?

You can bond directly to glass using Type 1 Bonded, although care should be taken to ensure the adhesive used is suitable for whatever finish or surface is present on the rear face of the glass.

Another option, especially if using thin glass or mirror, is to bond the glass to 3mm hardboard first, then use Type 1 Bonded fixes. This gives a reasonable 10mm standoff from the wall.

Alternatively, use thicker MDF or plywood backing panels with the Type 1 Fixes (or Type 1 Bonded) installed in the usual way, either face-fixed or rebated.

 

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