#3 in Knockout punches
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Reddit mentions of Greenlee 730BB-1-1/4 Knockout Punch Unit
Sentiment score: 1
Reddit mentions: 2
We found 2 Reddit mentions of Greenlee 730BB-1-1/4 Knockout Punch Unit. Here are the top ones.
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- Greenlee 730BB-1-1/4
Features:
Specs:
| Height | 12 Inches |
| Length | 10 Inches |
| Number of items | 1 |
| Size | 1-1/4 in |
| Weight | 0.7 pounds |
| Width | 10 Inches |
I built an e-BIAB setup a few years ago that is still my "indoor rig" for deep winter months. Price breakdown was roughly as follows:
Kettle:
Total = $265
Controller:
Total = $365
Wiring:
Total = $60
Grand total: $690
You can shave a lot off of that by building a simple PID controller as others have mentioned. I was pressed for time, so I went with the EBC II and have been fairly happy with it. You can also find fittings a bit cheaper if you shop around.
Note I also bought some fancy Greenlee punches (e.g. http://www.amazon.com/Greenlee-730BB-1-1-Standard-Knockout-4-Inch/dp/B002NQZ0J0/) and a step bit to cut my holes, knowing I'd use them again. You can avoid that if you have friends w/tools or just buy a dirt cheap step bit from Harbor Freight and work a bit harder.
Also, worth mentioning that you DO need GFCI protection and if you are at all unsure about hooking things up, get a professional electrician.
DN 32 - 1¼ - 1.660 in (42.16 mm)
Would be a 1 1/4" hole punch like.
https://www.greenlee.com/products/DIE%2540c-RD-1%2540.250-(43%2540c2)-CONDUIT-(735).html
https://www.amazon.com/Greenlee-730BB-1-1-Standard-Knockout-4-Inch/dp/B002NQZ0J0
Are you soldering in or using a bulkhead fitting on your boiler? You could use a step bit to drill out a hole.
https://www.amazon.com/Neiko-10194A-Titanium-Drill-Speed/dp/B000FZ2UOY/ref=sr_1_3?s=hi&ie=UTF8&qid=1518546407&sr=1-3&keywords=step+bit+for+stainless+steel