I have been asked a couple of times for instructions on making a DIY bait pump. I thought I would put it on here for everyone to see. I will add that if you make it correctly it is a very good pump and can be built for around £14. The measurements given can be fine tuned to fit your height, I am 5' 10" and this is comfortable for me. I am not saying this pump is any better than any other pump out there but it must be one of the cheapest to make.
You will need 1 metre of 22mm copper pipe, 1100mm of 15mm copper pipe, 1 22mm compression equal T fitting, 1 15mm compression equal T fitting, 1 metre m6 (6mm) stainless threaded bar, 10cm garden hose, stainless M6 nuts and washers and some bathroom silicone. All of this can be found at Toolstation or similar.
First you need to cut your 22mm copper pipe to 850mm and attach the 22mm compression fitting long ways. Use another 10cm of 22mm pipe for a handle. See PIC 1. That is your main pipe made!
Next you need to drill a 6mm hole through the top of the 15mm compression fitting and bolt the threaded bar through, locking in place with nuts either side See PIC 2.
I used threaded bar connecting nuts, which are longer and easier to tighten into the T Piece for the inside connection and nylon locking nuts for the top See PIC 3.
Now you can cut yourself 900mm of 15mm copper pipe and slide it over the threaded bar connecting to the compression fitting. The threaded bar will be rattling around in the copper pipe at the bottom so thread a couple of nuts up the bar and into the pipe that will stop it rattling so much. Cut 2 more pieces of 15mm pipe for the handle making a t shape. Now cut a 10cm piece of garden hose longways and attach with tape under your handle this will stop you trapping your fingers when pushing the sand out of the pump. See PIC 4 That is the pumping shaft made.
When you slide the pump shaft into the main pipe you will notice it is quite loose at the top. You will need to fabricate or find a metal washer, preferably stainless, to slot inside the top nut on the compression fitting. This will act as a shim and make pumping much easier. Once this is done you can slide the top nut over the pumping shaft See PIC 5.
Continued.....
You will need 1 metre of 22mm copper pipe, 1100mm of 15mm copper pipe, 1 22mm compression equal T fitting, 1 15mm compression equal T fitting, 1 metre m6 (6mm) stainless threaded bar, 10cm garden hose, stainless M6 nuts and washers and some bathroom silicone. All of this can be found at Toolstation or similar.
First you need to cut your 22mm copper pipe to 850mm and attach the 22mm compression fitting long ways. Use another 10cm of 22mm pipe for a handle. See PIC 1. That is your main pipe made!
Next you need to drill a 6mm hole through the top of the 15mm compression fitting and bolt the threaded bar through, locking in place with nuts either side See PIC 2.
I used threaded bar connecting nuts, which are longer and easier to tighten into the T Piece for the inside connection and nylon locking nuts for the top See PIC 3.
Now you can cut yourself 900mm of 15mm copper pipe and slide it over the threaded bar connecting to the compression fitting. The threaded bar will be rattling around in the copper pipe at the bottom so thread a couple of nuts up the bar and into the pipe that will stop it rattling so much. Cut 2 more pieces of 15mm pipe for the handle making a t shape. Now cut a 10cm piece of garden hose longways and attach with tape under your handle this will stop you trapping your fingers when pushing the sand out of the pump. See PIC 4 That is the pumping shaft made.
When you slide the pump shaft into the main pipe you will notice it is quite loose at the top. You will need to fabricate or find a metal washer, preferably stainless, to slot inside the top nut on the compression fitting. This will act as a shim and make pumping much easier. Once this is done you can slide the top nut over the pumping shaft See PIC 5.
Continued.....
