Search found 6530 matches

by GlennW
Tue Jul 10, 2018 7:01 pm
Forum: Welding
Topic: Eye protection for silver soldering?
Replies: 5
Views: 102

Re: Eye protection for silver soldering?

I just wear my regular prescription glasses and have never given it another thought.
by GlennW
Tue Jul 10, 2018 10:36 am
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 14
Views: 262

Re: O-Rings as piston rings

I'm not used to that. :)
by GlennW
Tue Jul 10, 2018 8:53 am
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 14
Views: 262

Re: O-Rings as piston rings

warmstrong1955 wrote:
Tue Jul 10, 2018 7:49 am
Not sure I recall correctly, but I think Bill's problem at first was seal drag. (friction) So Mauro's comment about 'deepening the groove', is a sound one.
That is what I was referring to with the "trial and error" method.
by GlennW
Tue Jul 10, 2018 7:31 am
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 14
Views: 262

Re: O-Rings as piston rings

I doubt that you will find specific application data for what you are wanting to do, so most likely the "trial and error" method will come into play! The info I posted is for a linear actuating cylinder with an O-ringed piston. It seems to me the "real" Bill (seal killer) did a similar project and g...
by GlennW
Mon Jul 09, 2018 4:23 pm
Forum: I.C. Engines
Topic: O-Rings as piston rings
Replies: 14
Views: 262

Re: O-Rings as piston rings

According to my O-ring catalog:

Clearance between the piston and cylinder to be .005"

Groove diameter to be bore diameter minus .114"

Groove width to be .090"

This for a moving piston seal, but it does not specify if hydraulic or pneumatic.
by GlennW
Sun Jul 01, 2018 9:37 pm
Forum: The Junk Drawer
Topic: Tesla cars
Replies: 22
Views: 561

Re: Tesla cars

To clarify my first post, in my opinion, Tesla is the leader in electric cars and battery technology, not the big 3.
by GlennW
Fri Jun 29, 2018 6:06 pm
Forum: The Junk Drawer
Topic: Tesla cars
Replies: 22
Views: 561

Re: Tesla cars

Mr Ron wrote:
Fri Jun 29, 2018 3:04 pm
If he would concentrate all his efforts on just one thing like cars instead of trying to reinvent the world, he might just be competitive with GM, Ford and Chrysler.
Actually, GM, Ford, and Chrysler are the ones that can't compete with Tesla!
by GlennW
Wed Jun 27, 2018 10:56 am
Forum: Home Shop CNC
Topic: Mirroring a part
Replies: 7
Views: 221

Re: Mirroring a part

I usually just plow ahead and make the mistakes so I know the answers for later... I have mirrored parts before, but as you have already done, I draw it accordingly, and just flip the CAD drawing and generate new code. I always drip feed the machine anyway. I'm kind of curious to try the "mirror" fu...
by GlennW
Wed Jun 27, 2018 10:06 am
Forum: Home Shop CNC
Topic: Mirroring a part
Replies: 7
Views: 221

Re: Mirroring a part

I've never tried the "Mirror" function on my controller, but I'm curious if the location of the "part zero" comes into play as it does in CAD.

I forgot to root through the manual last night to see what is involved.
by GlennW
Wed Jun 27, 2018 7:21 am
Forum: Welding
Topic: TIG Welder - Everlast
Replies: 36
Views: 1522

Re: TIG Welder - Everlast

Does it not strike you as odd that the motherboard for the Miller Dynasty costs $800 when you can buy a complete 200A TIG welder, albeit with poorer specs and not quite as many features that you are unlikely to use, for $150? https://www.ebay.com/itm/MMA-TIG-ARC-IGBT-Welding-Machine-200-AMP-110-220...
by GlennW
Tue Jun 26, 2018 4:00 pm
Forum: General Discussion
Topic: 1/2 - 12 tap
Replies: 32
Views: 990

Re: 1/2 - 12 tap

whateg0 wrote:
Tue Jun 26, 2018 2:54 pm
"David, this is a 1/2-12 British Standard Whitworth.
I'm not buying it!
12 Pitch001.jpg
Which still doesn't explain the odd designation.

A 55° BSW thread angle is fairly obvious.
by GlennW
Tue Jun 26, 2018 6:58 am
Forum: General Discussion
Topic: 1/2 - 12 tap
Replies: 32
Views: 990

Re: 1/2 - 12 tap

liveaboard wrote:
Tue Jun 26, 2018 6:53 am
Could the 1/32 be the Whitworth number?

Whitworth has weird inexplicable [to me] numbering, and this seems to be a size from that place and era.
The designation would be 1/2 BSW.