Here is a list of all the postings Paul Lousick has made in our forums. Click on a thread name to jump to the thread.
|Thread: Soldering with tin|
Do a search for "Tin metal granules" (or similar) on ebay. I recently purchased some that was 99% pure tin which I used to make fusible plugs for a boiler.
|Thread: Plumbers Jointing Paste ???|
Loctite also sell pipe sealant for high temperature applications.
|Thread: Plumbing question|
It is true that "If the flow into the pipe at 3/8 end is 10 litre/min ,the flow through the 1/4 pipe will be 10 litres/min,as will the flow out of end of 3/8 pipe". The 1/4" pipe is the restrictor that controls the volume thru the pipe. Inclease this and the flow will be greater then 10 litres/min.
A 1/2" dia garden hose connected to a 1/2" tap which is connected to a 1/2" water supply pipe is another example. When the tap is fully open there is a 1/2" bore thru all items and at 50psi you will get about 30 gallons/min but as the tap is closed (similar to going thru a smaller intermediate pipe) the volume of water out of the end reduces. The pressure will also be reduced slightly because of the extra friction. Adding more bends in the pipe run or reduced bore diameter in connector fittings will also reduce the flow and pressure.
|Thread: Magazine article series.|
Images from your computer screen are only captured at the resolution setting and size of your screen and therefore are not that good.
I much preferred the ease of to printing a copy of a page from within MEW. But you can get a good, detailed copy in pdf format by using the PocketMags viewer. Its limited to only printing 2 pages at a time and takes less than a minute.
You can then use a pdf editing program to join all of the pdf prints into one book but my preference is to convert them to jpg file and use your standard photo viewer.
|Thread: Help re: motor & Dewhurst switch wiring for Boxford lathe please?|
David, do a search in the box above for " Dewhurst ". lots of previouse posts on MEW. Im not an expert but not all single phase motors are reversible.
Edited By Paul Lousick on 04/12/2019 23:06:03
|Thread: In line water valve control|
(4" long control. The shaft fits into the valve). Are you refering to an extension for the valve spindle ? (Photo ?)
If so, the normal practise on full size engines is to have a square sectiion on the end of the valve spindle and the extension rod has a head with a square hole that fits over the spindle.
|Thread: Muncaster's Simple Entablature Engine|
The photos and drawings show a pipe connected from the valve chest to a hole in the base plate which is bolted to a wooden base. Where does the steam/air exhaust to ? Is this pipe not used when running ?
|Thread: Exotic welding|
Friction welding is also used to fuse together big pieces of steel.
One of the projects which I worked on was machinery that replaced the anodes used in aluminium smelters. Aluminium is made in enormous electrical furnaces and use carbon anodes. ( Aluminium smelter use more electricity than that of a small town). The anodes are basically big blocks of carbon 900 x 900 x 1000 - 1500mm long and mounted on a steel stem. The stem has a number of branches at the bottom which fit into holes in the carbon block. Molten cast iron is used as a filler for bonding them together (similar process to solderring but on a bigger scale).
The carbon is eventually eroded away and has to be replaced. The bottom of the support stems is cut off and new ones welded in place. The re-furbished stem is used again with a new carbon block.
New pieces are spun at speed and friction welded to the bottom of the spigots at the bottom of the support stem. These are 150 - 250mm diameter and welded in minutes.
Photo after the pouring of cast iron.
|Thread: DRO on a Mill|
What keeps the head from rotating on the round column. I know some mills have a guide/key but will still allow a slight mis-alignment when raised.
|Thread: Brass Tarnishing|
In the early days (I am not that old and only read about it), they used lanolin from sheeps wool to prevent tarnishing and rusting of metal. It is now available at hardware stores in a spray can. Good for your dry hands as well.
|Thread: DRO on a Mill|
My original mill, a Sieg SX3 had a digital scale fitted to the quill but the RF-45 (clone) did not.
My Easson digital readout has lots of features. Bolt pattern positions, PCD, inclines, different memories and can cut a curved edge by moving the cutter to the X and Y co-ordinates shown on the display. With the addition of a scale on the Z-axis, this can also be done vertically.
The Z-scale is bery useful for not only drilling holes but for accurately milling to a specific depth.
I have an RF-45 mill/drill and have the Z-scale on the quill which is much more accurate in controlling the height of the cutter. The mill head is normally locked in position when machining to make it more rigid while machining. Even more important on a round column mill because the head could rotate on the column. Much easier on my mill to adjust cutter height with the quill than with the column because it has a geared micro adjusting knob which can raise/lower the quill by a thou or 2.
|Thread: Inside chuck jaws|
Is your Rohn-3 jaw chuck self centreing, or do you adjust each jaw independently ? (A photo is always good so we know what you are talking about)
Self centreing 3-jaw chucks have to mesh with a scroll and should be inserted in the corerct position otherwise they will not be concentric with the spindle. They are normally a matched set to suit the chuck and are not interchangeable with other jaws. The grooves in the jaws are curved to match the scroll and cannot be reversed, which is why you have 2 sets. One for holding on the outside and one for holding on the inside.
|Thread: Holding screw-end end-mills/slot-drills|
I always take the ER chuck out of the mill and hold it in a bench vice to tighten. And as noted earlier, use an extension on the spanner to apply enough torque to tighten.
|Thread: Muncaster's Simple Entablature Engine|
The bottom photo shows the job supported at the tailstock by your live centre (I assume in the offset position) but the headstock end in a collet instead of a centre. Did the work piece just flex as it was rotated ?
|Thread: Aldi Metal Bandsaw|
Even on a hand saw, either metal or wod, a biit of wax on the blade makes cutting so much easier.
Lubricating Bandsaw Blades
My bandsaw (not Aldi) also has rubber on the drive wheels and I use bees wax to lubricate the blade which helps cutting and extends the life of the blade. The wax stick which I use is about 60mm dia x 300mm long and was purchased from a supplier of the blades. I run the blade thru the end of the wax stick prior to cutting. The saw is 5 years old and has done heaps of work. The rubber tyre is still good and has not broken down.
I would advise that you use bi-metal blades on your saw. They cost a bit more but last longer.
|Thread: Rake angle on Cutting Tools.....memory tips???|
As the years pass by, I find it harder and harder to remember things but a text book or computer helps me remember things like rake angles.
John, They should shut off completely. But there are some cheap clones about. Good luck making a repair.
|Thread: Using the Maplin (Dremel clone) for cutting tool steel|
If you are referring to a 1/4" lathe tool blank in a hardened state, it can be cut with an angle grinder (or Dremel) with a thin cut-off grinding disc. Tool steel is a general term for carbon steel that can be used for making tools, etc (eg. silver steel, + ) and is normally supplied in a soft, annealed state and can be easily machined prior to hardening.
Edited By Paul Lousick on 20/11/2019 00:13:55
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