Home made coil shells/housing/casing ideas

[Fabian]

Go to thingiverse.com and search for "metal detector coil".
None by Tibuck19, but there are a few examples there to choose from.

Thanks Qiaozhi, but none of Thingiverse's looks as great as the ones that Tibuck did, that's why I ask him (if he wants, of course) to share the designs.

[Tibuck19]

Thanks Qiaozhi, but none of Thingiverse's looks as great as the ones that Tibuck did, that's why I ask him (if he wants, of course) to share the designs.

Pm me your email. i only ask that you do not post the files on thingiverse. make sure all the flat sides are towards you build plate and only use supports for the coil bobbin file also i have modded the model to use the tails that silverdog sell but if you wish to use the one i originally designed i can share those too. photo shows with new tails.

[dbanner]

Use styrofoam sheet, high density, 1 inch thick.
Cut out any fancy coil shell shape you want
Use soldering iron to groove out space for coil( don't use the good iron, use old tip)
Fill with plaster filler then brush with white glue entire surface
Coat with rust oleum truck bed liner( several coats make tougher exterior, the more the better)
Quick and easy, extremely tough. Looks very good like pro.

Vacuum forming is best for serious man hobbyist.
ABS no cheap anymore.

[moorejl57]

Here is my take on 3D printed shell and coil form. Make sure you have the flow rate for your printer dialed in as the parts are a close fit (0.5mm total clearance).

Coil winding form: print bottom as is, flip top so flat is on table, use 0.15mm layer height. Glue top and bottom with CA gap filling glue (let set 4 hours) before winding wire in slot (don't ask how I know) unless you like detangling 20m of wire. Start by drilling two small holes about 1 cm apart through slot (after gluing) so that both wires can exit coil form towards the inside away from slot. The starting wire is a no brainer to thread into one of the holes. For the end wire, after ~28 wraps of 0.4 - 0.6 mm wire you will want to wiggle the eye of a large sewing needle through the second hole and through the coil wraps from the inside so you can pull the outer wire through the wraps and out the hole, very tidy!. So be sure you can get the wire into the eye of the needle and drill holes large enough to pass the eye of the needle.

Search Coil shell: Print both top and bottom at 0.2mm layer height. Install completed coil winding form (tight fit, can glue to bottom shell) with wires exiting near strain relief. I left two meters of wire coming out of form so I don't need to solder on a coax or other cable. Twist wires together, use heat shrink to bind wire every 150mm or so, wrap with spiral wrap and terminate with RCA connector or whatever you want. Glue top plate to bottom shell with CA gap filling glue and use large heat shrink over printed strain relief to join spiral wrap to shell.

I am using this mono-coil for my MPP Beach Rev. E. The ear spacing is 19 mm to fit the Whites space saving rod kit.

3D Coil 200mm.zip

[moorejl57]

Here are some pictures of the printed parts.

[6666]

Here are some pictures of the printed parts.

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Great work thanks

[6666]

Pm me your email. i only ask that you do not post the files on thingiverse. make sure all the flat sides are towards you build plate and only use supports for the coil bobbin file also i have modded the model to use the tails that silverdog sell but if you wish to use the one i originally designed i can share those too. photo shows with new tails.
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PM sent

[Fabian]

Here are some pictures of the printed parts.

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Thanks, moorejl57. Good job! The coil looks amazing, thanks again for sharing it.

[moorejl57]

Thanks, moorejl57. Good job! The coil looks amazing, thanks again for sharing it.

Thanks! If you need different ear spacing let me know.

[6666]

Thanks! If you need different ear spacing let me know.

Hi would it be possible to change the ear spacing to 23MM so a minelab shaft can fit ? thanks.

[moorejl57]

Hi would it be possible to change the ear spacing to 23MM so a minelab shaft can fit ? thanks.

Here you go...

[6666]

Here you go...

Thanks looks good in Cura, much appreciated.

[dfbowers]

Thanks!