Search found 1022 matches

by John Hasler
Tue Jan 15, 2019 2:52 pm
Forum: General Discussion
Topic: PB Blaster is Snake Oil
Replies: 61
Views: 9746

Re: PB Blaster is Snake Oil

I've never expected penetrating oils to break down rust. What they can do is soak into any porosity that is present and provide a small amount of lubrication to some of those parts of the joint that are not chemically bonded by the rust but are forced together by its expansion. This permits a larger...
by John Hasler
Wed Jan 09, 2019 2:17 pm
Forum: Live Steam
Topic: Welding Machine
Replies: 37
Views: 1483

Re: Welding Machine

warmstrong1955 wrote:
Wed Jan 09, 2019 1:41 pm
Might be interesting to hear from the original poster.
I think he was looking for a welder, and with the currant direction of the thread.....gave up.
Just get him a 12000 watt amp and a set of 2/0 oxygen-free gold plated speaker cables and he'll be all set to weld with heavy metal.
by John Hasler
Wed Jan 09, 2019 12:37 pm
Forum: Live Steam
Topic: Welding Machine
Replies: 37
Views: 1483

Re: Welding Machine

Possibly apocryphal story: An audio engineer set up an A/B demo using audiophile-quality speakers and sound source to compare ordinary speaker wire and some gold-plated "low oxygen" brand. Big switch labeled "Cheap wire" and "Low distortion wire". Sat some audiophile experts down to listen and watch...
by John Hasler
Wed Jan 09, 2019 11:58 am
Forum: General Discussion
Topic: feeling stupid
Replies: 64
Views: 4562

Re: feeling stupid

A slightly less accurate but quick way to center a drill on a cylinder is by trapping a 6" steel pocket scale between the drill point and the top of the cylinder. When the scale is level the drill is centered.
by John Hasler
Tue Jan 08, 2019 2:40 pm
Forum: Live Steam
Topic: Welding Machine
Replies: 37
Views: 1483

Re: Welding Machine

Good that we agree.
by John Hasler
Tue Jan 08, 2019 8:52 am
Forum: Live Steam
Topic: Welding Machine
Replies: 37
Views: 1483

Re: Welding Machine

If McIntosh is the same company it once was (it seems to have been bought and sold quite a few times) if they say it's 1000 watts it is.
by John Hasler
Tue Jan 08, 2019 8:49 am
Forum: Live Steam
Topic: Welding Machine
Replies: 37
Views: 1483

Re: Welding Machine

Pontiacguy1 wrote:
Mon Jan 07, 2019 2:06 pm
Could be a marketing ploy... like buying a 110V vaccuum cleaner that says it's 5.5 HP.
Well, sure. Measure the peak power during the first half-cycle as the motor starts. 5.5 HP.
by John Hasler
Tue Jan 08, 2019 8:43 am
Forum: Live Steam
Topic: Welding Machine
Replies: 37
Views: 1483

Re: Welding Machine

It usually means that it can actually be run in an overload of 25% and not be hurt. Don't know if that's correct for this welder or not, but sometimes you find electrical motors rated that way too. I bought a 1 HP motor a few years ago that said it had 120% duty cycle, which I took to mean that it ...
by John Hasler
Mon Jan 07, 2019 1:16 pm
Forum: Lathes
Topic: Setting the compound at 0* or 30*
Replies: 33
Views: 1090

Re: Setting the compound at 0* or 30*

I have no way to measure carriage movement; so I keep the compound at zero so I can use the dial to measure the length of a cut or bore. Since it won't be very accurate, I use the carriage for cutting once the dimension is established. this gets me to within +- 0.2mm quickly, which is usually close...
by John Hasler
Sun Jan 06, 2019 9:28 pm
Forum: Lathes
Topic: Setting the compound at 0* or 30*
Replies: 33
Views: 1090

Re: Setting the compound at 0* or 30*

In the photo the base of the toolpost has nothing under it so the force on the tool can bend the topslide down. It's best to get the entire base of the toolpost over the compound so that it is fully supported. It doesn't really matter what combination of toolpost position, topslide position, and com...
by John Hasler
Sat Jan 05, 2019 7:18 pm
Forum: Lathes
Topic: Setting the compound at 0* or 30*
Replies: 33
Views: 1090

Re: Setting the compound at 0* or 30*

I set it at whatever angle keeps it out of the way. If it isn't in the way it stays where I last used it which is quite likely to be 29.5. Don't leave it set at almost but not quite 0 or almost but not quite 90, though.
by John Hasler
Fri Jan 04, 2019 7:16 pm
Forum: General Discussion
Topic: Torque and it's relation to tramming a mill head
Replies: 14
Views: 602

Re: Torque and it's relation to tramming a mill head

Considering that the instructions for my new (2015) milling machine made no recommendations for bolt torque on those head bolts, I can only assume that the manufacturer does not consider it an issue? Did/does Bridgeport recommend such torque values? ~RN When a manufacturer fails to specify a torque...