Allow 3% to the outside diameter for cold creep in PTFE.
Temperature changes also effect the amount of creep in this product even a 2-3 degree centigrade change in temperature will greatly effect the material, especially on the dimensions you are machining to.
Take the clients advice and wait...
There is a product better than Helicoils, and I've used these many times - they are could Keyserts, they are far superior in locking in, and don't tear out like a Helicoil does.
On the subject of tapping threads in aluminium, the best cutting fluid I've used is metholated spirits.
Pat,
I hear you, re: greasy surface PE - but tend to dissagree on poor surface finish. Really depends on what effort is made in the finish of the tooling, I could manufacture a mould that leaves a surface finish to the product, equal to an injected moulded die finish. Depends on what the client...
You say geometry is a problem for Rotomoulding,
It may not be, the company I work for, mould parts that are in two or three sections, each part moulded individually and assembled inside each other then moulded over again, a typical example of this is our revolutionary made Hospital Vacuum Pump...
This sounds as though it's a part that could be easily made in a fabricated steel mould and Rotary Moulded. Only thing is it would have to be moulded in Polyethelene, which I'm not sure of for Chrome plating. Maybe using a cross-link additive to the powder would work mixed with cadium.
A steel...
Just enquiring if anyone has any info on the above.
I have purchased this CCTV switcher on ebay, and it does not have a manual with it. I also have a Pacom 2020 keyboard to suit the switcher and again have no literature for that either. I know it can be programmed as it has dip switches at the...
What make of motor vehicle are we talking about?
Classic Industries sell remanufactured parts for many models of classic cars at very good prices.
I'm in Australia, and own a 79 model Chevy Camaro, which is not a common vehicle down-under, Classic Industries have been a vital part of my...
Dare I say it - "I'm a Toolmaker" I agree family dies do not work. It's extremely hard to balance all the components so that the flow of molten plastic through the runners/sprues and or DME Hot runner gate system will mould correctly. Too many variables with components of various sizes...
Voltages are good, 440 volts consistantly.
I checked the load today at least six times, as the plant was fully loaded. Current was different in all phases at all times I checked. Nothing was consistant there - I'm guessing with other big manufacturing plants in the industrial estate, that this...
I always used to use virgin natural styrene to purge the barrel, set the barrel temps at around 300 degrees C and blast the styrene through on a long stroke and rapid screw revolutions. Never had to remove a screw from the barrel for cleaning, they come up clean with the styrene purge.
I've machined seals as described, maybe not quite as big in diameter. You should cut your stock PTFE bar to a managable width to be held in a four jaw chuck, dial it up, bore your internal dimension. Part off pieces at say 13mm widths
Now with that done - machine up a mandrel to be held in the...
Thanks guys,
I will be checking the loads at regular intervals come Monday, I do hear what you are saying re: single phase loads from lighting etc. I haven't noticed any hot motors of late, but have had a lot of problems recently with burn outs of relay timers on some of our older machines, and...
I was testing and doing some maintenance to the main power supply board at work yesterday, and tong tested each of the three phases, no load on the factory as it was Saturday and no production machines were running. I was very suprised to find such a variation of amperage on each of the phases...
Hi patprimmer,
Yes I am very close to St Marys, I work in that suburb so know it well. Is there a plater in St Marys that can plate ABS? Just looked in the phone book and online, didn't come up with anything, although I do see Vulkan Plastics listed.
Regards
I'm interested in a coating to be applied by spraying onto the surface of ABS that is conductive, so it can then be Chrome plated. If any of you guys know of such a product please post it on here. The EMI Paint sounds ideal, but I cannot find that product here in Australia, so much for Google.
