Found this cable port/eyelet/grommet design on the Virtual Bullet forum last year. I've installed it on my WSMs and now my drum. It's a very easy mod and very cheap ($5).
Use 3/8" lamp nipple tubing which is threaded on the outside and hollow on the inside. The inside hollow diameter is 1/4". Also need brass locknuts that work well with the hollow tubing. I bought it at Home Depot but you can buy it anywhere lamps and lighting supplies are sold.
The hole in the nipple tubing is big enough and, when cut in 3/8" lengths, is short enough for the ET73 & ET732 elbow probes to go through. You can get 4 cables through the hole easily and a 5th with a little wiggling.
3 in. Nipples (2-Pack)-7060300 at The Home Depot
Brass Locknuts (12-Pack)-7017200 at The Home Depot
3" Brass lamp nipple tubing with brass locknuts sold separately. Cut a 3/8" long piece of this tubing, or, they also sell an pack of assorted lengths of the tubing. The shortest is I think 1/2" which you could use if you didn't want to cut the 3" nipple tubing into 3/8" lengths.
Installed, one locknut on each side of the drum body.
These would also work well but are a little more expensive and you only get two instead of being able to cut quite a few from the two 3" lengths of tubing. Lot of 2... 3/8" brass threaded bushing grommet TV-69 | eBay
Use 3/8" lamp nipple tubing which is threaded on the outside and hollow on the inside. The inside hollow diameter is 1/4". Also need brass locknuts that work well with the hollow tubing. I bought it at Home Depot but you can buy it anywhere lamps and lighting supplies are sold.
The hole in the nipple tubing is big enough and, when cut in 3/8" lengths, is short enough for the ET73 & ET732 elbow probes to go through. You can get 4 cables through the hole easily and a 5th with a little wiggling.
3 in. Nipples (2-Pack)-7060300 at The Home Depot
Brass Locknuts (12-Pack)-7017200 at The Home Depot
- Cut a piece of the 3" nipple tubing with a metal saw to 3/8" in length. It helps if you put two strips of painters tape over the spot where you intend to drill your hole to help stop the drill bit from wandering. Also use a few drops of oil to lessen the friction which will help keep the drill bit cool.
- Using a file or Dremel with grinder bit, grind off any metal burrs on the end of the cut tubing that occurred from the cutting process so the nuts will thread onto the tubing.
- Drill a 3/8" hole in the drum where you want the cables to go through the drum body.
- Insert the 3/8" cut piece of tubing into the hole you drilled in the drum and thread a nut onto either end of tubing for a clean finished look and to eliminate possible damage from chafing of the cables.
3" Brass lamp nipple tubing with brass locknuts sold separately. Cut a 3/8" long piece of this tubing, or, they also sell an pack of assorted lengths of the tubing. The shortest is I think 1/2" which you could use if you didn't want to cut the 3" nipple tubing into 3/8" lengths.
Installed, one locknut on each side of the drum body.
These would also work well but are a little more expensive and you only get two instead of being able to cut quite a few from the two 3" lengths of tubing. Lot of 2... 3/8" brass threaded bushing grommet TV-69 | eBay
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