By continuing to use this site, you agree to our use of cookies. Find out more

Member postings for pgrbff

Here is a list of all the postings pgrbff has made in our forums. Click on a thread name to jump to the thread.

Thread: BSP tap needed
16/04/2021 07:46:26
Posted by David George 1 on 14/04/2021 20:06:58:

Hi Steve. Have you thought of using a T joint. 1 1/4 x 1 1/4 x 1/4 My local pipe suplier will thread the 1 1/4 pipe for very little whilst I wait and not a lot of money. You will get a better seal as a pipe is not that thick pipe section and not many threads.

David

I'm trying to keep the airflow in the 1 1/4 pipe as smoth as possible. I need to tap a small valve into the pipe to allow air in, and be able to adjust how much air, to hopefully create a venturi effect to open up glass beads flowing through the pipe.

16/04/2021 07:43:31
Posted by Robert Butler on 14/04/2021 18:21:32:

Where are you based, I have a selection of BSP taps.

Robert Butler

Thanks but I'm in Italy. At least I can find BSP taps here, German seem to be reasonably priced. Normally I buy used English manufactured from Ebay when I other than metric.

Thread: How do I remove this small bearing? And the one behind it.
14/04/2021 18:07:02
Posted by mark costello 1 on 14/04/2021 17:29:00:

Those are made from socket head bolts. I have a surface grinder which made it easy to make.

Is one enough? I'm not sure how they work?

14/04/2021 17:22:15

After a couple of evenings of patient messing, I have both the bearings out. The first was reasonably easy, the second took longer. Heat obviously helped but it was still awkward without proper tools.

I used a 6mm rawlbolt, 10mm diameter. I had to modify both ends but it worked in the end.

Thank you for all your suggestions. I hope the 2 new bearings go in fairly tightly and the Al. casting has been damaged.

Thread: BSP tap needed
14/04/2021 17:18:26

As a woodworker I don't often need taps. I want to make up a mixing valve for my sandblaster and need to tap a 1/4" BSP hole in the side of a 1 1/4" iron tube. I'd prefer to buy only one tap and I'm not sure which would be the best choice. Are BSP threads always tapered?

14/04/2021 15:06:25

I need to make a single threaded hole, 1/4"bsp into the side of a 1 1/4" BSP iron pipe.

As this may be the first and last time I will probably need to tap a 1/4" bsp hole will a single taper tap do?

 

Edited By pgrbff on 14/04/2021 15:06:52

Thread: Loctite or Draper? Much difference?
13/04/2021 07:14:46

The Draper was no longer available from Amazon, many marketplace sellers will not post out Of UK. After much online searching found Loctite from large online store for less than £20 including shipping.

12/04/2021 13:46:16
Posted by Hollowpoint on 12/04/2021 10:01:47:

While we are on the subject, it's worth noting there is a LOT of fake loctite around at the minute. I'd be wary of buying from ebay or amazon!

With that in mind what other brands do people prefer?

I agree. There do seem to be too many variations on eBay and Amazon. One reason I thought the Draper might be safer.

12/04/2021 09:34:37

People in Italy are far less likely to do things for themselves.

For a driving licence or car tax there is an agent in virtually every town who will apply for you. When I bought my first car here the dealer used an agent for the paperwork. The agent wouldn't sign off because I hadn't registered for residence in Italy, but was registered as an Italian living abroad, which is enough to own a car registered in Italy. Although the vehicle tax office was only 4km from the dealer, I had to drive 140km to check it out. Having paid for the car in full they still wouldn't give it to me.

Same for property tax, even if you have no income or retired you need an accountant or "union" to work out what you owe in taxes.

The rules are so complicated and changing constantly. Ask 5 Italians the same question and you will get 5 different answers.

12/04/2021 09:27:12
Posted by Hopper on 12/04/2021 08:58:48:
Posted by pgrbff on 11/04/2021 21:27:41:
Posted by Mark Rand on 11/04/2021 20:31:34:

There are sellers on fleabay who will ship 50ml of loctite 542 to italy for £25. I would have thought there would be local sellers who could match/beat that price.

No, remember I live in Italy. Many suppliers still have a min. charge and most don't have websites. Easier to buy from UK or Germany, even Japan.

Surely the local car parts stores in Italy carry threadlockers and sealants etc in various brands same as anywhere else? Or are you in lockdown?

It is a very different world. To some extent it is because I am in a fairly remote area, I do a 70km round trip to go to the supermarket, but mostly it is just different.

I needed a backplate recently for a Mitutoyo gauge. I found it online, which is rare enough here, and the price was less than £1. When I called them I needed both a VAT number and minimum order value of 50 euro. I found a pulley I needed for my bandsaw online, on the manufacturer's website, I asked them where I could order it and whilst they did answer, they couldn't tell me who to go to. I could go on.

I'm fairly fluent in Italian but there is much less of a culture of DIYers. If you want silver steel you won't find anyone who'll sell you a short piece, you need to buy a length. Same with copper pipe for plumbing, 6m is minimum length.

It's easier, quicker and cheaper to order from abroad. Unfortunately, Brexit has now ruled out the UK as shipping is taking months and you get charged a minimum of 18 euro or 2% in charges on top of VAT and duty.

I found the Draper 542 on Amazon and they are still shipping non-food items to Italy at reasonable cost.

11/04/2021 21:33:27
Posted by Mark Rand on 11/04/2021 20:31:34:

There are sellers on fleabay who will ship 50ml of loctite 542 to italy for £25. I would have thought there would be local sellers who could match/beat that price.

Since Jan 1st buying anything from the UK, except maybe Amazon, who no longer ship a vast number of products to the EU, has been a nightmare. Parts ordered from Ebay and major online suppliers can easily take 6-12 weeks.

11/04/2021 21:29:14
Posted by Les Jones 1 on 11/04/2021 20:45:57:

If you are planning to use it to try to remove the bearing I think it is not the correct grade. For that i suggest 638

Les.

It's for pneumatic connections. I could go back to tape but 542 so much easier.

Edited By pgrbff on 11/04/2021 21:29:36

11/04/2021 21:27:41
Posted by Mark Rand on 11/04/2021 20:31:34:

There are sellers on fleabay who will ship 50ml of loctite 542 to italy for £25. I would have thought there would be local sellers who could match/beat that price.

No, remember I live in Italy. Many suppliers still have a min. charge and most don't have websites. Easier to buy from UK or Germany, even Japan.

11/04/2021 17:27:56

I would like some Loctite 542 but over here a small 50ml bottle is around £40. I can get Draper from the UK much cheaper, will there be much difference?

Thread: How do I remove this small bearing? And the one behind it.
10/04/2021 14:18:48
Posted by Grindstone Cowboy on 10/04/2021 14:12:52:

+1

I like Les's suggestion.

Rob

Me too

09/04/2021 17:22:16

Heat always worked with model helicopter/aircraft engines so will try that first, then rawlbolt.

I think trying to knock two bearings out together from the back might be a tad tricky.

09/04/2021 17:19:48
Posted by Grindstone Cowboy on 09/04/2021 13:25:18:

I recall seeing somewhere - possibly on the SKF site - a bearing puller that has thin legs with shaped ends that are designed to fit between the balls and then twist to lock into the inner and outer races. More than likely horribly expensive, but an interesting idea.

Rob

Trouble is that I will probably not have to do it again and it will be very expensive.

09/04/2021 11:11:41
Posted by Nicholas Wheeler 1 on 09/04/2021 10:38:05:
Posted by pgrbff on 09/04/2021 10:15:50:
Posted by Nicholas Wheeler 1 on 09/04/2021 08:42:15:

Expanding mandrel(a rawlbolt) and slide hammer for the first; hammer and drift for the second.

Or you could buy a bearing puller that works the same way.

I'm not sure there is enough room between the stacked bearings.

What is the easiest destructive way to remove them?

Why would this method need space between the bearings? The expanding mandrel grips the inner race of the first bearing. It would work well with the spacer and threaded bar mentioned in other posts, which given the lack of support on the housing is probably a better idea.

I hadn't read your first post properly to realise they're in a blind hole, so would use the same technique on the lower bearing.

If the housing is aluminium, then I'd set up the puller and give the housing a lick of heat to make the job go better.

I've never had any luck extracting bearings with the grease method which just seems to make a mess.

All of the tools/mandrels I have seen are wider at the end and expand beyond the hole in the bearing, not in the hole itself.

09/04/2021 10:25:26
Posted by Derek Lane on 09/04/2021 10:22:11:

How about heating the casing and see if it will come out easy either drop out or take less effort for it to be pulled or hydraulic out

I'll try, but there are 2 in there. I think the deeper one might be more difficult.

09/04/2021 10:15:50
Posted by Nicholas Wheeler 1 on 09/04/2021 08:42:15:

Expanding mandrel(a rawlbolt) and slide hammer for the first; hammer and drift for the second.

Or you could buy a bearing puller that works the same way.

I'm not sure there is enough room between the stacked bearings.

What is the easiest destructive way to remove them?

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
JD Metals
cowells
ChesterUK
emcomachinetools
Warco
Eccentric July 5 2018
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest