Makita RT0700C Detachable Cable Mod

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Introduction: Makita RT0700C Detachable Cable Mod

In the process of upgrading by CNC machine to control spindle (on/off) by G-Code I had to find a nice a way to insert a relay between my Makita RT0700C router which is mounted on the CNC machine and the mains power.

I also wanted to have ability to take the router and use it handheld if I had to.

So here's what I came up with.

It turned out that a GX16 connector fits perfectly into the cable hole in the router body. So I installed the GX16 socket into the router and soldered the plug to the cable so can disconnect and reconnect when needed. And when I get the relay box done it will have 2 GX16 sockets: one for power in (will use the modded cable for router) and one for powering the router (will create another cable with 2 GX16 plugs on each end).

This is a relatively simple and reversible mod (you can reattach the factory cable as it was if required, however the warranty on the router will likely be void). Soldering is only required on the GX16 connectors.

WARNING: take all the necessary precautions when working with electrical wiring. In other words you must know what you are doing!

UPDATE 2018-05-15: One reader pointed out that there's a safety issue with using a metal bodied connector. Instead a plastic connector should be used. I have updated the part list below, however the pictures still show a metal connector (as done originally).

You will need:

Step 1: Remove Router Cover

Cut the label with the utility knife along the line where cover meets the router body.

Unscrew the 4 screws.

Remove the cover.

Step 2: Remove Cable

Unscrew and remove the clip that holds the cable.

Loosen the terminal block screws to remove the mains cable (note which wires went to which terminal).

Step 3: Solder GX16 Male Connector

The wires need to be about 10cm (4 inches). I used pins 1 and 3.

Step 4: Mount GX16 Male Connector

Cut a small grove as shown on the photo (I used a Dremel). This groove will allow the 3-pin GX16 connector to be properly positioned (pin 3 down) and also prevent the rotation of the connector.

If you have access to a 3D printer you may choose to print a custom nut (attached) for a tighter fit.

Put the stock or 3D printed nut on the GX16 connector and position the connector into its place as shown on the photo. The nut needs to be tightened.

Step 5: Connect Wires

Connect the 2 wires to the terminal block and tighten.

Note down which pins you've wired to which terminal.

Step 6: Reattach Cover

Reattach the cover and secure it with the screws.

Step 7: Solder GX16 Female Plug to the Cable

Leaving the rubber sleeve on the original power cable add shrink-wrap tube on the cable, add the GX16 metal jacket and solder the wires to the GX16 female connector (matching the pins so that same wires get connected to the same terminals inside the router).

Heat the shrink-wrap, assemble the plug and push the rubber sleeve over the plug half-way (you may need to apply quite a bit of force)

Step 8: Connect

That's it!

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    7 Comments

    Hello.

    It is not a good idea to replace the power cord with a metal bodied connector. The Makita router is double insulated, which means it does not require an earth connection. If you add a metal connector you have broken the protection and it is not safe to do this. Using a plastics connector would be fine.

    Safety is no accident.

    4 replies

    Thanks for your comment.

    Is it because the metal part comes in contact with skin? I.e. if I put a rubber sleeve over the metal connector would it solve the safety issue?

    Well it would be helpful, but the theory of "double insulation" is that there are two layers of insulation between the human and the electricity. As an example consider the power cord. Each wire is covered by an insulating layer and then the insulated wires are covered by another layer of insulation. There is a Wiki about this.

    https://en.wikipedia.org/wiki/Appliance_classes

    Well, that does look better. I'm not an expert on this, all I'm trying to do is to save you from harm.

    We have this big culture of safety at work and it comes home with you.

    Nice mod. You should enter this into one of the contests that are currently running on the site.

    1 reply

    Thanks! Currently there does not appear to be a contest that this mod would fit in. Will watch the contests page though.