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Attaching welding wire to cinder blocks with no drilling

How can I attach a welding wire to a raised bed built out of cinder blocks while preserving wire's conductivity. The wire is attached to 9 v battery. I was thinking of using silicone adhesive used for pottery, but I am not sure if this will stop the flow of electricity? I do not want to drill nor use concrete nails. Looking for glue on solutions. Anyone know if product like Sugru would work for this purpose? Thank you.

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Hi @aggi ,

Please clarify your question as to what you want to achieve by doing this.

The battery is connected to the welding wire (how?), which is attached somehow to a cinder block (the question you asked) but what else is the welding wire supposed to connect to electrically?

Also what is the other wire from the battery connected to? It takes two wires (+ve and -ve) from the battery for current to flow in a circuit.

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Hi @jayeff, I am building a slug trap. I have it on my plastic raised bed where I secured 2 parallel welding wires closed loops around the bed with staple gun. The loops are about 1/2 apart. Then each loop is connected to one diode on 9v battery (using 9v battery clip with wires). It will sting the slug when it touched both wires at the same time. I have it working on my plastic raised bed. Just wondering how to replicate it on my cinder blocs raised bed. Would silicone adhesive dots that would glue the wire loops to cinder blocks still allow for the electricity flow?

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Hi @aggi ,

Using neutral cure silicone sealer would work as it is an insulator so there will be no electrical connection between the wires via the cinder block. Current will still flow through the wires when a slug closes the circuit by touching both wires at the same time

Support the wires somehow until the silicone has completely cured to ensure that they stay in position. Read the directions on the product label about curing time.

If the wires are touching the cinder block along their full length when in position then there may be a problem when it is wet. Not because of the silicone but simply that water may provide a current path between the wires over the cinder block, but presumably you haven’t had any problems with the plastic raised bed so it should be the same, although water may run off plastic faster than off rougher cinder blocks. Maybe something to consider. Dry cinder blocks should be no problem as concrete is also an insulator.

Just be careful if you completely encase the wire(s) with a blob of adhesive that it is not too large, the slugs may figure out how to bridge across from one wire to the other via the blobs if they are adjacent, thereby missing the bared wires. ;-) Maybe alternate where each wire is secured.

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Thank you @jayeff . Good points here. Thank you for a detailed answer with tips. Appreciate it.

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@aggi - First glue down a pair of toothpicks or other nonconductive strips to support your rod so its air gapped then use the silicon sealer.

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