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Member postings for Speedy Builder5

Here is a list of all the postings Speedy Builder5 has made in our forums. Click on a thread name to jump to the thread.

Thread: Making split bronze bearings [ silver soldering ]
22/03/2019 06:42:27

If the mating surfaces (After boring) are big enough, superglue can sometimes be sufficient.

Thread: Recommended base flashing for an external wall
21/03/2019 08:47:32

We use zinc sheet over here as lead is fast becoming a non preferred metal to have around.

Thread: Milling curves
21/03/2019 08:45:30

For a low cost solution, if your vice sits on swivel base, you could hold the piece in the vice, offset from the centre of the vice by the required radius. Mill a flat over the end of the component. move the vice around a few degrees and make another pass. You could do that for 180 degrees of rotation of the vice. Now turn the component upside down and repeat (if you can't achieve full depth on the first passes).

Thread: Mystery Starrett vice
20/03/2019 06:50:08

We used to use them to hold a rule in place when marking off rivet holes onto the edge of sheet metal, very useful when the panel was curved.
BobH

Thread: Return key
19/03/2019 18:11:58

Has the forum site been improved, The RETURN key now works on Apple Mac "Mojave" instead of using Shift Return.

BobH

Thread: Boxford tool post
19/03/2019 18:09:45

Buy extra toolholders at the same. Not all toolholders are comparable with whatever brand you buy.

BobH

Thread: Boxford VM30
17/03/2019 15:38:32

Lets assume you have the bearings loaded up about right, then there may be too much grease in the spindle bearings! How much did you put into the bearings as they don't need much plus if you topped up by using the greasers it could overload the bearings and that would cause them to heat up - happened to me on my Boxford AUD.

BobH

Thread: What is this grinder?
16/03/2019 07:28:54

Interesting that there is a reversing switch on it. Is that so that left handed workers can use the other side of the wheel ??

Thread: Boxford Screwcutting box / Leadscrew binding
15/03/2019 07:08:52

Don't overdo the headstock greasers. On a cold day, if I screw the greasers down a couple of turns, it will reduce the speed of the headstock until things warm up. The headstock bearings don't need much grease. What gear train have you got between the headstock and the leadscrew ?

12/03/2019 21:06:55

follow this link and print yourself the boxford manual.

**LINK**

Thread: A Clash of Rivets
12/03/2019 18:44:50

If the Oxy-acet is available, I would preheat the firebox with propane, but not up to the point of melting the existing rivet joints, then swap over to Oxy-acet. If possible, use a lower temp silver solder as you don't really want to keep melting existing joints.

BobH

Thread: Newbie Boxford owner saying hello
12/03/2019 18:40:31

Plenty of Boxfords on this site - ask away.

BobH

Thread: This looks like a bargain
10/03/2019 16:26:15

yes, its in France, BUT !!

**LINK**

Thread: New Toy
10/03/2019 12:24:52

Crikey - Do you get inside the box and shut the door to keep the workshop clean?

Thread: Boiler material
10/03/2019 12:21:33

just a thought, and welcome views of others. I use disposable CO2 mix gas bottles, 300 mm high 100mm diameter and wall thickness of 3mm. These have a working pressure of 100 bar at 20 deg C and test pressure of 145 bar. Made of steel and about 2.5 litre capacity. Could these be used for a vertical boiler, drilling the end caps for fire tubes etc etc.?
I have no idea as to the steel specification and just pose this as a question and in no way suggest or recommend their use.

gas bottle.jpg

Ps Usual excuse for horizontal picture (Horizontal boiler ??).
Another use could be to use the end cap of the cylinder for a smokebox door.
BobH

Thread: What Did You Do Today 2019
08/03/2019 20:12:25

Had to replace the bearing in a Guy Noel cement mixer - Simple, take out the top circlip and the drum falls off to reveal the second circlip. Remove that and replace bearings etc. Not so, it wouldn't budge. Tried heat, WD40, brute force including a sledge hammer and aluminium 3" diameter drift. Plan 'B', looked inside drum to see that the bottom of the drum had a rusty hole in it and cement had entered the bottom bearing. Used the angle grinder to cut the bottom of the bearing housing off and with some ugly brute force, and cutting disc, removed the bearings in pieces. The repair is to make a new bottom bearing housing from a disposable CO2 cylinder, replace 2 x new bearings and job done (Perhaps).
bearing.jpg

Thread: Aircraft General Discussion
08/03/2019 12:18:25

Interesting, As an apprentice at Weybridge, we used Schleron image photography for taking shockwave photos of wind tunnel models at mach 6.0 back in 1965. The breakthrough is doing this via telemetry in free air. Back in the day, the "flash" came from a bank of high voltage charged capacitors. During a 30 second run, the angle of attack could be changed 3 times, with 3 photos being taken from separate banks of capacitors. The wind tunnel working section was between a huge steel chamber (Statosphere chamber) and a barage baloon inflated with dried air which had passed over huge trays of silica gel. Either side of the working section were huge gate valves. These were closed, the "strato chamber" pumped out to near vacuum. When the "go" button was pressed, the gate valves opened and the air rushed through the plenum section, click, alter angle of attack, click etc and 30 seconds later it was all over.
BobH

Thread: Can opener - the holy grail in engineering?
05/03/2019 06:49:21

Neil, ring pulls on cat food and pilchard tins are a no-no. The lid flips up and flicks fish gravy in your eye!
BobH

Thread: Silver soldering a blind 'mortise and tenon' joint.
05/03/2019 06:45:12

Also I suggest Tenacity 5 flux for the joint as you are using stainless steel which quickly oxidises and prevents the solder wetting the joint.

Thread: Machining cork!
05/03/2019 06:38:42

High speed and sandpaper, if required, glue sandpaper to a flat block of wood.
BobH

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