Search found 103 matches

by atunguyd
Fri Oct 26, 2018 12:08 pm
Forum: General Discussion
Topic: What is a good rust preventative for machine storage.
Replies: 51
Views: 8128

Re: What is a good rust preventative for machine storage.

I live in the coast in sunny south Africa (similar climate to San Diego). Not only is humidity around 90% all the time and weather hot, we also have the sea breeze blowing up the hill and into the house. Everything rusts here! In my workshop I run an electric dehumidifier 24/7 and I am getting no ru...
by atunguyd
Sun Oct 21, 2018 5:24 am
Forum: General Discussion
Topic: MEK sources
Replies: 30
Views: 4818

Re: MEK sources

I guess that is one area where I am more fortunate than you guys. Here in south Africa you can buy anything! I lived for 12 years in Sydney Australia where it was difficult to even buy sulphuric acid for anodising, one had to rather buy battery acid there which is 50% diluted sulphuric and even then...
by atunguyd
Tue Oct 16, 2018 3:09 pm
Forum: General Discussion
Topic: Introducing my son to machining.
Replies: 7
Views: 1695

Re: Introducing my son to machining.

Bosch oscillating multi tool I have seen these tools and itch to own one but I am not sure what are used for or what new capability they offer in addition to other power tools. Logic dictates that if one does not immediately see the benefit and use of a tool, one should not own it. But the thought ...
by atunguyd
Tue Oct 16, 2018 12:39 am
Forum: General Discussion
Topic: Introducing my son to machining.
Replies: 7
Views: 1695

Re: Introducing my son to machining.

Good for you! And your son. Now, find something to make together that he needs/wants/likes. He's a bit young to appreciate a home brew beer... Agreed but since he made the coupler he has decided that milling is his job so the night before a brew he feeds the grain into the mill. On Sunday he asked ...
by atunguyd
Tue Oct 16, 2018 12:33 am
Forum: Home Shop CNC
Topic: Are 3D Printers Finally Practical?
Replies: 34
Views: 11137

Re: Are 3D Printers Finally Practical?

I have a prussa i3 printer that I assembled about 3 years ago. My lathe is a sieg sc8 (not a mini lathe) and has a metric leadscrew. In order to do some imperial threads I determined that I would need to swop out one of the gears in the drive train to a 33 tooth. I designed and printed it on my 3D p...
by atunguyd
Mon Oct 15, 2018 4:29 pm
Forum: General Discussion
Topic: Introducing my son to machining.
Replies: 7
Views: 1695

Introducing my son to machining.

I recently got into brewing my own beer. One of the pieces of equipment one eventually gets is a grain mill which I bought last month. These are normally driven with a hand drill but I decided to motorise mine. I picked up a electric gate motor from a friend and designed an oldham coupler in solidwo...
by atunguyd
Fri Jun 01, 2018 6:10 am
Forum: General Discussion
Topic: Indicating knurled surfaces
Replies: 14
Views: 2887

Re: Indicating knurled surfaces

I think you are too concerned with accuracy. Accuracy counts for more as speeds increase. Your grain mill won't or shouldn't be turning extremely fast. Instead of trying to get down to the tenth, accurate within a thousandth is probably more than enough. Chuck that knurled shaft in, get it close as...
by atunguyd
Thu May 31, 2018 12:26 am
Forum: General Discussion
Topic: Indicating knurled surfaces
Replies: 14
Views: 2887

Re: Indicating knurled surfaces

My favored hack is a piece of springy worn out hack saw blade held in the tool post to ride against the rough surface, gear teeth, thread, knurls, whatever you have and place the indicator on the blade. Leverage may even increase the resolution. You do save worn hack saw and grind the teeth off, do...
by atunguyd
Wed May 30, 2018 5:04 pm
Forum: General Discussion
Topic: Indicating knurled surfaces
Replies: 14
Views: 2887

Re: Indicating knurled surfaces

Thanks guys. Due to my location (south Africa) getting scroll chucks or indicator replacement feet is not really an option. The reason the run out is bothering me is that I am motorising this grain mill and the gears (3D printed herringbone gears) are wobbling a fair bit. I may consider leaving it l...
by atunguyd
Wed May 30, 2018 6:49 am
Forum: General Discussion
Topic: Indicating knurled surfaces
Replies: 14
Views: 2887

Indicating knurled surfaces

Looking for some advise from the experts here. I have a roller for a small home brew grain mill that has a bent shaft on it (this shaft extends out of the roller and is used to drive it). This is causing the shaft to have a fair amount of runout on it. I would like to mount this roller onto my lathe...
by atunguyd
Tue Jul 04, 2017 12:18 am
Forum: General Discussion
Topic: Machinist-Specific Cell Phone Problem
Replies: 27
Views: 3463

Re: Machinist-Specific Cell Phone Problem

Sorry guys the talk went to Spain and I could not resist. It is one of my very few clean jokes (in other words the ones my wife likes)

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by atunguyd
Mon Jul 03, 2017 3:34 pm
Forum: General Discussion
Topic: Machinist-Specific Cell Phone Problem
Replies: 27
Views: 3463

Re: Machinist-Specific Cell Phone Problem

So anyone heard about the Spanish magician who said he will make himself disappear on the count of three?

He stands there and calls out
Uno..
Dos..

And he disappeared without a Tres...

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