Search found 448 matches

by jcfx
Wed Nov 13, 2019 4:50 pm
Forum: General Discussion
Topic: Diaphragm fabric
Replies: 32
Views: 2029

Re: Diaphragm fabric

Thanks for that bit of information. I am aware of Kevlar, but was not familiar with the word aramid. Unfortunately, that's likely not a good choice, as the diaphragm must be capable of stretching, and I strongly suspect Kevlar doesn't permit that quality H Glad you found a diaphragm material ( subj...
by jcfx
Sun Nov 10, 2019 11:43 pm
Forum: General Discussion
Topic: Diaphragm fabric
Replies: 32
Views: 2029

Re: Diaphragm fabric

McMaster does have sample packs of rubber sheeting, 8450K2, quite spendy for 15 assorted 4x4 or 6x6 sized sheets. The 9402K22 I mentioned I'll guess is reinforced, since the product description says it's a aramid ( kevlar ) /buna-n blend it's probably worth it to ask McMaster for a sample of that pa...
by jcfx
Sat Nov 09, 2019 6:58 pm
Forum: General Discussion
Topic: Diaphragm fabric
Replies: 32
Views: 2029

Re: Diaphragm fabric

Harold, have you looked at McMasters offerings for fabric reinforced rubber materials ? I took a brief glance thru their Buna-N and Viton rubber sheets and some of them come close to your .036 thickness ( 9402K22 ) most of what McMaster offers is 1/16" thick. I'm not sure where this cutoff valve is ...
by jcfx
Sun Nov 03, 2019 7:24 pm
Forum: General Discussion
Topic: Another "What is it?" post
Replies: 7
Views: 1398

Re: Another "What is it?" post

I kinda agree with reubenT it's a adjustable length holding / clamping thing,
the "bone" shaped flat piece looks like it attaches to a flat surface.
Does the part with the rope knurled knobs extend out ?
Looks like it does.
by jcfx
Thu Oct 31, 2019 11:11 pm
Forum: The Junk Drawer
Topic: Rodents like wiring.
Replies: 44
Views: 9458

Re: Rodents like wiring.

The wiring difference is night and day, nicely done !
I believe you when you say that the NT100 wiring took more than 70 hours,
btw who makes the NT100 you did the work on ? Googling returns those little
Nissan vans you see tooling around in Japan.
by jcfx
Thu Oct 31, 2019 7:57 pm
Forum: The Junk Drawer
Topic: Rodents like wiring.
Replies: 44
Views: 9458

Re: Rodents like wiring.

The reason the battery had gone dead was there was a short in some part of the rear defroster circuit. After charging it, the short caught the harness on fire. The fire didn't total the car - the repair cost to replace the harness did. It was 70 hours of labor at a cost of $14,000. Steve Holey Gold...
by jcfx
Mon Oct 21, 2019 6:05 pm
Forum: General Discussion
Topic: Electrical wiring in the home shop.
Replies: 61
Views: 8072

Re: Electrical wiring in the home shop.

Patio wrote:
Mon Oct 21, 2019 1:41 am
GFI are required in areas with concrete floors. Just in case you are running around your shop barefoot.
I did not know that ! Thats a nother thing to add to my to do list at home.

Patio, thanks for starting this thread, very informative and useful !
by jcfx
Sun Oct 20, 2019 4:16 pm
Forum: Milling Machines
Topic: Mill lubes
Replies: 8
Views: 1196

Re: Mill lubes

Hi Wayne, I tend to like Mobil Vacuoline better on vertical surfaces like columns, it has tackifiers so it doesn't drain off vertical surfaces, I use it on my PM 932 vertical column ways. I get it from BRW Technologies, but they no longer have a web commerce site, but they are on eBay now , a pint w...
by jcfx
Sat Oct 19, 2019 5:14 pm
Forum: The Junk Drawer
Topic: THE END!
Replies: 9
Views: 1334

Re: THE END!

Information loss has always been an issue; paper burns or rots, memories fade, you can't carve much in stone and even that won't last forever. In this case, the information is simply being discarded because no one is willing to pay for it's maintenance. This is true that papers burn and rot, but so...
by jcfx
Mon Sep 23, 2019 7:44 pm
Forum: Live Steam
Topic: Gluing brass to aluminum
Replies: 8
Views: 2129

Re: Gluing brass to aluminum

Wanted to add one more thing, like HaroldV said if he can substitute a steel sheet then he can solder the shell casings
it's a matter of painting the steel sheet to look like aluminum.
by jcfx
Mon Sep 23, 2019 7:39 pm
Forum: Live Steam
Topic: Gluing brass to aluminum
Replies: 8
Views: 2129

Re: Gluing brass to aluminum

Props ( not propeller ) is my specialty, since that's what I do for a living. Couple of questions followed by my comments - How thick is the aluminum ? Thin sheets especially if they're large are subject to flex, epoxies and super glues are hard when cured so they'll pop off regardless of surface pr...
by jcfx
Sat Sep 14, 2019 5:27 pm
Forum: General Discussion
Topic: Periscope films
Replies: 14
Views: 3619

Re: Periscope films

Yes they may own the medium on which the documentary is displayed. That, however, doesn't mean they own the copyright. Unless Shell transferred the copyright to Periscope, the latter doesn't have any legal rights to the film. In fact, if Shell's copyright still exists on the original they could sue...