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It sounds like I was worrying about an imaginery problem. Marking the components and using the puller sounds good to me.

Cheers,

Thanks for the reply. I used the simple method of tapping the spindle out. I like the idea of making a puller using a piece of tube and a threaded rod. My concern about re-assembly was that I had...

Hi,
On my Hercus model C the bull gear was a very tight fit on the spindle. To make it easier to remove/replace the spindle I've polished the bore of the gear so it is now a slide fit.

Can...

I've now tried silver brazing on 3mm thick copper with three tips and post this review. All this was done with my oxy/LPG torch and a big LPG burner as a background heat source.

First I tried a...

Quite true. I can even get the small heating tip (with barrel) and fit it to my mixer. But if I have to go any bigger then it gets much more expensive.



I'm working on an existing boiler and...

Hi Karl,
Thanks for your concern here. I might be sillier than I realise. I was going to buy an LPG tip (size 15) but it seemed a bit small and a few people told me the only difference is that the...

Thanks, this is a good tip (no pun intended). I borrowed a Colt handle with the cutting tip and it worked well. Also, I've tried my Comet O/A cutting tip and it doesn't work nearly as well. The...

I am using Comet gear and have belled the end of the tip slightly so it's like an LPG tip. This does help.

Today I was silver brazing some smaller brass work and used a standard size 15 tip. ...

Hi,

I'm using an oxy/LPG torch for brazing. The torch has a standard acet tip (size 20) rather than a special LPG tip.

The problem I have with LPG is that I can't tell whether I have a neutral...

Hi,

I have some brazing? rods that have "EM-WELD AUSTRALIA" and some that have "EM-FLOW AUSTRALIA" stamped on them. Does anybody know about these rods and their characteristics or composition ? ...

I should have tried this. The spindle was out of the press and I was worried about bending it. Pressure via the release nut certainly did help. Better than having to make a set of wedges.

One...

Hi,

Thanks to all who have replied here. The links to relevant posts are much appreciated. The chuck is the model 34 shown in the scan of the old catalogue page.

This morning I tightened the...

Thanks for your reply and thanks to Rob for his detailed reply. Yes, there is a round nut (with holes for a C-spanner) above the chuck. But if I tighten it down onto the chuck as hard as I can...

Hi,
I'm fixing an old drill press (Richardson E39) and am trying to get the chuck off the spindle. Can anybody definitely tell me whether it has a taper mount or a screw mount ? The chuck is a...

Hmmm, it's not looking easy. I'll update this thread when I get some results. Thanks for your efforts and help here.

Thanks,

Thanks for the reply. I'll try my screw that has been brazed when I get it back and worry about making something if it fails.

Do you know anybody who sells acme rod ? I've been told these screws...

Hmmm, well the length is wrong but what about the other dimensions ? My friend who can braze mine has told me that the cracks extend further than I thought and also the screw is slightly distorted. ...

Thanks for this. A friend will be able to help this week so I'll get some nickel bronze rods.

Cheers,

Do you have these screws ? Mine are 11/16" OD, 8 TPI Acme thread, and 1 5/8" long. The recessed portion for the locating lug is 3/8" dia, starts 3/4" from the inner end, and is 1/4" long. I'd...

The chuck is only for light work on a small lathe. I don't know who cracked the screws and how much force they used or if they used a badly fitting key.

The holes are about 10mm deep and the...

I doubt it would fail while in use. At the moment the square hole will open up if I lean on the chuck key. If it's brazed and goes soft I think it's still the square hole that will fail rather than...

Hi Grahame,

Thanks for the brazing tip. I don't have gas nowadays (expensive luxury) but I will see someone tomorrow who has and hopefully they will assist this week.

I'm planning to use...

It's an old chuck (no brand) so spares will be rare at best. Three of the corners are cracked. The one in the picture is the worst.

You're right that there is very little meat to play with. If...

Hi,

I have a chuck where one of the jaw adjusting screws is cracked probably from excessive force with a chuck key. I'm wondering if I should try to fix this (presumably by welding) or if I will...

I don't think this is right. Current = electrons. If you have 70 amps you have a certain number of electrons per second regardless of direction or cathode surface area.

My understanding is that...

Well, I can't match your price or the $100 Ozito but my baby inverter welder has been good for me. If interested, check my review as it might provide some details for comparison.

Cheers,

Hi Derek,
Thanks for the reply. Please post here or send me a PM if you don't get my e-mail.

Cheers,

Updating my own post, TraceyTools (UK) sells the required taps and Miller Machine (USA) sells replacement nuts and screws. I'm checking about overseas deliveries.

Hi Grahame,

Yes, they sure are. Bolt.com.au has a few that are too large and are about $270. Yikes. I wonder about grinding a bit to cut the thread but it is too small (3/8" 10TPI).

The...

I wonder if the SatinCraft flux makes the arc appear brighter. I used some recently and the arc did seem brighter or more fiery than I'm used to.

Re inverter welding: I had to weld the ends of...

I've pulled my topslide apart and found that the nut for the feedscrew is rather worn. The slop is about 0.030". This is the big cylindrical nut that is a push fit in the topslide base.

Should I...

Hi Derek,

Thanks for the info about the spindle. I was tempted to put it back together today but decided to clean it properly first. The lathe has felt plugs like you say and also thin strips...

I couldn't find such a belt but I did get a 6PK820. It is a bit tight. Bando makes a 6PK865 which sounds better.

I can see why people dislike removing the spindle. The large gear near the right...

This sounds good. Thanks for the tip. Repco and a nearby belt/bearing shop are on my list.

Hi Mal,
Thanks for the offer. I'll check around here first when I get the time. Currently I'm stuck fixing hacked websites. Arrgh.

Hi Derek and Mal,

Thanks for the replies about the belt. My headstock has been removed and dismantled so if there ever was any precise adjustment for alignment then there sure isn't now. This is...

Hi,

I'd like to add myself to the Hercus register. Late last year I got an old Model C (#1408) and it is now almost complete.

The main bit I need now is a flat main belt. I think the...

I'm still using Gemini also and they still seem fine. They really are an excellent deal (good price, easy delivery). I suppose real welders can get good deals on other rods but for mugs like me it...

This would be good so please do if you get the time and inclination. I tried a few 7016 rods that were given to me and they seemed easy to use. Tips on how to use them and where they are better...

Sorry Grahame, I wasn't referring to your post but that belonging to Inverter. Your comments are fine (and I now know how to spell sludgy).

I agree with this but I question your motives for reviving an old thread. There used to be a Gemini website (something like http://geminithai.co.th) but its server was corrupted and page requests...

I'm stick welding DuraGal RHS and angle at the moment. The coating might be thin but I still see wisps of zinc if I don't clean first so the fumes might be an issue. I'm cleaning near the joint...

Do you mean 5mm or 5cm ? I can't imagine an extra 5mm being much value. The important thing is that you like them. Can you explain why you think they're better ?

The beads look fine. The welds on the angle look rather high like there isn't much penetration. I'm not a welder so please don't take my comments too seriously.

I know what you mean about...

Strange but true. I never managed to understand the thread I mentioned that 'explained' DCEP versus DCEN and Stick versus TIG so I'll forget about the theory and just accept the fact. Welds...

It was the price of CIG rods at hardware stores that inspired me to search elsewhere. Now I'm using Gemini 4112 rods from Bob at Ballina. The price is good and they seem fine to me.

You're right that Hornsby TAFE has no courses. I think there are courses at Meadowbank and Ultimo (and Randwick). But these might be far more involved than you want. You could try getting whatever...

While you're waiting for an answer I'd suggest searching for some info. I googled ("tig welding dc polarity") and found Tig-welding-tips.html among others.

HTH

I think TIG is normally DCEN (DC electrode negative) because most of the arc heat is at the positive end. Running DCEN means that the workpiece gets more heat than the electrode which is what you...

I'd say maybe 5mm. But I just glance to make sure I'm following the line and spend most of the time watching the puddle. So even if I could see further it wouldn't be a good idea because the puddle...