Member postings for Hopper

Obviously it lost a lot in translation. Chinese suppliers seem to often use Google Translate to generate their English sales literature and spec sheets, with often dismal results, sometimes hilarious. The dimensions listed look like maybe they would be the workholding capacity, not the overall size of the machine. Some sales pogue would not know the difference and just posted them as they came. Price seems about in line with same looking machines on eBay. That's commerce in the 21st century. You pays your money and you takes your chances.

That might be your best solution right there. Personally though, I would make one complete out of mild steel. Usually good enough for occasional hobby use. You don't need a mill to put the spanner flats on it. Either file them on good enough for a spanner to grip, or just hold the flywheel to stop it turning. Or hold the puller with vice grips etc.

As you probably already know, with a mild steel puller especially, don't just keep screwing the central bolt in until one of the two threads strip (usually the large one for some reason). Tighten it up as tight as you dare without risk of stripping anything, then give the head of the bolt a good sharp rap with a 2LB hammer. The shock will usually break the taper loose where steady force will not. And lubricating the bolt thread is a big help too.

HT socket head cap screws are often a cow to machine to a nice finish. No idea why. They just often are. Plus you are using a very small, not very rigid lathe on some very tough steel. Not a good combination. Try on some mild steel of known grade and see how it compares. If the finish on that is acceptable using the same tools and methods, the problem lies in the material.

I have used epoxy resin (the slow-setting variety) multiple times to repair motorcycle petrol tanks and to thinly coat motorcycle carburettor floats that are made of cork and gotten porous so started to sink. Seems to stand up to it OK. Silicone gasket sealer such as Silastic seems to do ok too. That would be my first thing I would try. Permatex and Loctite also offer silicone type gasket sealers specifically for fuel system use.

Edited By Hopper on 15/01/2023 08:09:06

Edited By Hopper on 15/01/2023 08:10:26

So where are the maths, the calculations, to support your unsubstantiated hypothetical assertions?

I'm in the group with the Russians in the video: getting stuff done.

Edited By Hopper on 15/01/2023 08:01:05

Edited By Hopper on 15/01/2023 08:02:08

If you do a search on Aliexpress for Bevel Gears, a plethora of choices pops up, from slot car drives to real truck diff gears and everything in between. Stupid cheap but usually good quality, Chinese industrial quality, not hobby grade.

So much for the theory that you can't/shouldn't gear a lathe to cut threads coarser than the leadscrew pitch. Only about 8 times the pitch there. Makes all the palaver about cutting 4TPI on a Myford seem a bit moot. But that is what comes from living where you can't just order anything you want on the net and have it delivered next day. Miracles performed daily, the impossible may require a short wait.

Looks very nice. Like the old Drummond M Types, they are still a good usable hobby lathe today.

And they are developing batteries made from wood, using lignum extracted from wood. So there goes the rainforest, again.

With small cars towing heavy loads like a caravan, it is possible to permanently stretch and distort the bodywork so the doors will no longer open.

Sorry, I just couldn't resist, given the volume of past pedantry on the topic. A teeny tiny ruler:

Edited By Hopper on 13/01/2023 08:20:23

Sounds a useful upgrade for a small lathe.

Check with ARC or the manufacturer's data on the top RPM for the chuck you bought. Some have plastic retainers for the chuck key barrels,which limits the RPM before the heavy steel barrels fly out under centrifugal force. No idea what rpm that is though. My old banger Myford is flat out at about 800rpm so not an issue.

Eatin' irons in the West.

Exactly the type of thing the older generation said when the youngsters started "contacting" people instead of sending their man around to deliver a hand-written missive to their chambers.

But I think "reach out" goes one step too far. It's part of modern biz-speak designed to hide the fact they are doing nothing of any importance. "Reach out" sounds like they are making some great effort and taking great care and embracing the highly valued other person. When in fact they have just flicked them a snitty one-line email.

Edited By Hopper on 13/01/2023 00:37:40

No doubt she feels exactly the same about model engineering!

Exactly how much backlash are you getting?

Are you sure the backlash is because of the nut, and not because of the adjustment of the thrust bearing and handle on the end of the screw?

I have several times noticed news reporters ending a story saying they "reached out to" someone but received no comment. Sounds pretentious to me. And pretty sure it would have got me a large red "F" on any assignment in Journalism 301 at uni.

"Reverts back"??? Haven't come across that one. Wasn't aware I had undergone a metamorphosis into someone else. Very Kafkaesque.

I don't even contact them. I phone them or email them or once upon a time, wrote them a letter.

+1 on about 10 degrees side rake and plenty of front clearance to allow for the curvature of the 'ole. Plus, no back rake.