Do-It-Yourself
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General
- At height, always work with a stepladder (as high as possible). Do not use a chair to drill, screw, etc. at height.
- When you're about to disassemble something, make sure you take as many pictures as possible of the mechanism (all sides, aspects, etc). This will be very useful when assembling the system back, as you will forget how it was initially while repairing or fixing.
Stores
Switzerland
- Hornbach sells many sort of screws and wall plugs, and you can pay by the unit, which can be convenient.
- Jumbo has much less choice (for screws and plugs), but they sell boxes, which can be cheaper. Not all stores have the same stock; the Jumbo near Decathlon in Bussigny is better than the Jumbo in Crissier).
Tools
- For an adjustable Wrench, orient the wrench so that the fixed part is first and the sliding part is second. Then to tighten, you need to turn the wheel clockwise and to loosen, counterclockwise.
Fasteners
Screws
- Screws are the most common type of fastening mechanism. They come in many different varieties.
- Some screws can have different types of thread on each end. For instance, this dual-thread stud is a wood screw on one end but has a threaded rod on the other end.
- A threaded rod can be used if you need to fasten something to a place that is high up. For instance, if you need to attach something heavy (like a projector) to a wooden beam that is 50cm higher than the ceiling.
- You would use in this case a dual-thread stud to fasten to the wooden beam, then use a threaded coupling to connect the stud to a threaded rod, then you can attach the equipment (projector) to the bottom of the threaded rod.
- In this case, it can be difficult to screw (as you will have access only to a narrow hole), but there are solutions (tools) for this problem.
Rivets
- Rivets are an alternative to screws. However, they have the disadvantage that they are permanent; if you need to untie what you fastened, you will destroy the rivet while removing it.
- You can differentiate between a screw and a rivet if you don't see any imprint in the head. Usually the rivet will just have a hole (circle) in the middle of the head.
- There are various types of rivets, for instance:
- Blind rivets;
- Tubular rivets.
- To remove a rivet, you will need a drill (with a metal drill bit). See this tutorial. If the rivet head does not come off, drill deeper: you may have to drill quite a bit before it gets off and can be removed.
Wall Plugs
- The type of material is extremely important. For plaster, you have to take general material wall plugs. See below for details.
- There are also nylon wall plugs.
Different Types of wall plugs
- Some presentations links: link 1 , link 2.
- For very light weights on plasterboards or paster, universal wall plugs can be used. For heavier weights (but should not exceed 5kg on ceilings), there are two options:
- Toggle bolts (or chevilles papillon in French). Simple to install and probably fine for medium weights. Be careful though, the width of the divider should be small (not more than 13mm). Else the wings of those plugs won't be able to deploy. These are really designed to work with placo (dry walls). Larger dividers (such as gypsum boards) will have a too high width, these bolts won't work with them.
- Molly bolts / metal expansion anchors. Probably better for heavier weights, however you may need a special tool to install those bolts (Molly anchor pliers). Some models can be expanded without pliers, directly by screwing the screw which will expand the anchor. Again here, be careful to choose the model that suits your needs - in particular pay attention to the divider width. Those metal anchors can accommodate much larger widths than the previous plastic ones.
Removing wall plugs
- This can usually be done with a clamp, or by putting a screw inside the plug and pulling on the screw.
- Article for more complex cases.
Electric connectors
- Spade connectors, that can be used to wire electric circuits, must be crimped with a proper tool (don't use tape). Crimp at the middle section of the spade connector.
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- Electric dominos are being replaced by electric connectors that don't require screwing.
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Electric domino
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Electric connector
Drilling holes
- It can be quite difficult to mark the exact spots where drilling should be done. I've bought tools to help with this (laser meter, laser level). This should be better than with a manual measuring tape (in addition, the measuring tape damages the paint).
- If done with a pencil, be careful to have an eraser as well, as you will probably make a lot of marks. Pencil is actually not ideal as the marks are hard to remove on the walls / ceiling. I'd like to try with stickers.
- If drilling several holes to attach a binding (metal piece for instance), it's better to drill the minimal number of holes, partially attach the binding, and then drill the remaining holes through the attachment. This is because it can be quite hard to drill the hole exactly at the correct level without any guidance (even if you marked the target point precisely with a pencil).
- Using a hammer and nail can be useful to mark the target drill point. This will create a small anfractuosity that will help with the start of the drilling.
Finding structural elements
- Unfortunately, a stud detector (for wooden beams) does not work very well. However, there are various techniques available, but the base principle is to explore as much as you can from the viewpoints you have access to. For instance, you can look what's on the roof by opening windows, you can explore an attic, etc.
- One smart technique is to use powerful magnets to localize precisely on a lower floor an element you've located on a upper floor. For instance, the position of a wooden joist found on the attic floor can be mapped on the ceiling of the bedroom of the lower level via two powerful magnets. Be careful to take them powerful enough, but not too much to risk not being able to separate them!
- Another technique is to just drill holes (on the ceiling for instance). Then you can check what you drilled into, and use an endoscope camera to explore. If you drill the holes in an area that will get covered up later, they won't be visible so you get a lot of freedom.
Electricity
Safety & Checking Electric Current
- Be careful to always check (with a voltage tester) if there is live current on a wire before performing an operation on it (or near it). Even if it's after a switch or something that seems to act as a switch. There is a high risk of electrocution if you don't do that, be really careful about testing, and don't think that "there is no live current there so it should be OK".
- Note that if you are not sure, checking with a phase tester (screwdriver) may not be enough as the neutral wire may be not connected. In this case, there is still a phase on the phase wire, but electric current still does not pass. In that case, the proper tool to use is a multimeter.
Toggle Switches
- For a 3 position toggle switch, normally only 3 pins are required (one input to carry the phase, and two outputs to carry the phase to the motor various inputs). I bought a 4 pin one, you can just ignore / not use the second input pin and it works correctly. Note that the neutral and protective earth wires should be connected separately from the switch.
- I also bought a double (twin) toggle switch which just contains two independent toggle switches. For AC current, the live wire should be duplicated (easy with a three port electrical connector) to both entry pins. Then the two load wires should be connected to the device(s) and to the load pins of the switch. The neutral wire should be connected directly to the motor / device, bypassing the switch. In my case, there were 3 pins per circuit (so a total of 6 pins), so one pin in each circuit was not used (it would probably be used only for DC current). It was important to connect the live wire and load wire to the correct pins, else the switch would not work. On the following picture, the live wire was connected to the left silver pin (marked as +) and the load wire (from the device) to the middle silver pin. The golden pin was not used at all.
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Dry contacts
- Dry contacts don't have a potential difference between the two terminals. You can see them as a simple switch that is open or closed. They are usually part of an electric component / equipment (such as a contactor), and in this case the dry contact is not wired to the other part of the electrical circuit. This means you can just connect a live wire to a terminal, a second wire to the other terminal, and current will flow if the other electrical circuit activates it. Note that you can use a current with a different voltage than the one powering the equipment.
- For instance, a contactor can have a dry contact. With some contactors, you can build the equivalent of a logical AND - the current would flow only if it flows into the contactor main circuit and to the dry contact.
Capacitors
- If you don't have a multimeter with built-in capacity measurement, you can check if a capacitor is working with the classic resistance mode. Check this link, second method.
- To ensure a proper measure, make sure you discharge the capacitor fully first (by connecting the two electrodes). Also you may need to choose a high limit (2M Ohms was needed in my case). If the measure goes quickly over the limit, the capacitor is not working correctly: numbers should take several seconds and increase steadily if the capacitor is functional.
Electrical adapters
- What is important is that the voltage between the adapter and the device matches. Then the power of the transformer can be higher, it is not a problem (this corresponds to a higher amperage). If the power is lower (lower amperage) the device is not at risk, it is the transformer that will heat up and wear out (it will often blow quickly).
- Note: the power corresponds to the product of the voltage and the intensity. Example: 12v x 3A = 36 Watts.
Sockets and Plugs
- For laptop power adapters, connectors can be of the C5 type, while connectors to desktop PCs are usually C13. These are the female connectors, the corresponding male ones are C6 / C14. See this page for details.
- Switzerland T12 / C5 cables are available.
Lighting
Technical Information
- Bulb power:
- 40 W -> very low.
- 70 W -> low.
- 500 W -> very good.
- Technology:
- LED: best type available currently (2024). Low consumption.
- Halogen: best power, high consumption, heat.
- Compact fluorescent: good consumption, OK power, unfortunately there is a lighting time for high power. Obsolete.
- Incandescent: worst consumption. Obsolete.
Installation
- Before installing a light on the ceiling, make sure to clean it thoroughly. During the installation, dirt traces can easily appear on the white (painted) ceiling. Even though this can be mostly removed with a magic sponge, better to prepare the equipment so that it is as clean as possible to minimize dirt traces.
Shutters
- For Somfy motors (and probably others), when checking if the motor works correctly (after changing a capacitor for instance), make sure it is fully installed in the axis AND the panel is attached to it. Don't test outside the axis, or without the panel. It seems there are several security or detection mechanisms to prevent the wheel from turning in some cases (while no weight is detected, probably). In particular, it's totally normal that the wheel at the end of the motor only turns manually in one direction when the motor is considered independently. It will work correctly once fully assembled and attached to the panel.
- The mechanism that prevents the wheel from turning (which in turn prevents the shutter from falling) is a thermal brake (I've seen it being called electrobrake as well). You can't act on it (ie, you cannot disable it), it should be left alone.
- While fixing a Somfy motor, if possible don't touch the starred wheel at the end of one side of the motor. The screwing mechanism seems complex, and once I destroyed it inadvertently. I screwed it back with only the screw, which seems to work, but it's not the correct original mechanism.
- Adjusting the end stops on a Somfy shutter is important, but depends on the particular model. It usually involves manipulations with particular command sequences. Refer to the manual corresponding exactly to the Somfy model.
- Configuring the end stops is not needed if the last blade has a stop (for the upper end limit), or if the first blade has a rigid lock (for the lower end limit). A blade directly screwed to the axis counts as a rigid attachment, so in this case setting the lower end stop is optional.
Troubleshooting
- If the motor refuses to activate on one direction but seems to be functional (ie, the other direction works well, the capacitor works correctly, the motor makes some noises), double check if something prevents the blades from moving inside the rails. I've had one occurrence when after changing a capacitor and reinstalling everything, the shutter would not go down (but would come up). Resetting everything would also not work (the shutter would not move back and forth as it should have). This was apparently due to mechanical issues preventing the blades from moving down on the rails. Fixing this allowed the shutter to go down again when the proper switch was activated. So double check for any obstacles, and try to remove them.
Plumbing
- Angle valves (such as this one) can be controlled with the screw under the end cap.
- For sink drains (bondes de lavabo in French), there is usually two joints, one on the top part (in the sink) and one on the bottom part (under the sink). It can be a bit confusing because while the bottom one is usually in plastic, the material for the top one is similar to polystyrene (not elastic). The top part should still be installed by pressing hard into this joint.
Joints
- TPFL joints should always be done in the screwing direction. This video is very useful to understand the logic; if it's not done in the correct direction, the TPFL headband can be removed.
- Another easy reminder is that the TPFL ribbon needs to be enrolled on the male part, with a clockwise direction if you're looking directly at the male part (ie if you can see the insertable part first). Another video explaining the direction.
- Two more videos in English: https://www.youtube.com/watch?v=f7mjyzfB9Ec and https://www.youtube.com/watch?v=EkuLHpYz02Y.
Washbasin cabinet installation
- Always check if the drawer from the cabinet will not be blocked by the sink drain and/or the siphon. The height of the drain (when you add the siphon) can prevent the drawer from being able to go all the way. It's important to check this before you start cutting the siphon.
Applying silicon paste
- You need to apply a silicon paste to create joints between the basin and the walls/cabinet. This also acts as a glue.
- There are several colors available (mainly white and transparent). Some brands (like Rubson) also provide anti mold silicon.
- When preparing the silicone cartridge, it is better to open it exactly when you will apply the paste. Else it will dry and you will need to remove it from the nozzle. If you want to reuse some previously opened cartridge, it is better to use two nozzles (see this video). In any case, don't cut the nozzle.
- To apply the paste, use some masking tape and a joint smoothing tool to remove the excess silicon. Remove the masking tape before the joint dries. Some useful links: first, second, last.
- You can also consider using an electric cartridge gun rather than a simple manual one, this should make the job easier.
Assembling furniture
- While the furniture is not completely assembled, perform the assembly on the center of the piece, to be as far as possible from the walls as possible. Else, chances are high that during the assembly the parts can damage the wall paint. Also, use cardboard under the furniture to prevent parquet damage.
- When dealing with pneumatic cylinders (vérin in French), it can be perfectly normal that you are not able to manually move it. The added force from a lever arm is a lot, especially if the length of the arm is important (like in a bed frame, around 1.5m). Just install the cylinder where it should be, and it should move once all the pieces are in place.