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Member postings for HOWARDT

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

Thread: 41/2" discs
02/09/2022 10:33:21

Make sure that the discs are for cutting metal. I have a box of 1mm thick discs from Screwfix and they hardly wear when cutting normal steel. The springs may have work hardened to a degree which will make the wear worse.

Thread: Drawing a saw blade - help!
29/08/2022 21:07:54

Having followed this topic with the thought that the profile was wrong looked at manufacturing process. The saws are actually made from flat saw profile welded into a circle. Much easier to draw and get the correct tooth profile.

Thread: Changing oil seals
28/08/2022 19:39:43

Simple answer yes, they can be difficult even when you have done it many times. Most lip seals are formed around a metal ring. When the seal face is fitted against a full diameter shoulder you need to get something between the faces like a screwdriver. Of course you can do as much damage as you like to the old seal so brute force is the order of the day, just be careful when replacing it with the new one, one nick into the lip and it is toast.

Thread: Warco GH Universal...Spindle locking
28/08/2022 14:25:09

I have a GH Universal. Surely a collet chuck has flats so you can hold on those to tighten the nut. Alternative, which is what I do with R8 collet direct in the spindle is to use a one spanner on the draw bar and one on its locknut.

Thread: Cardan Block
28/08/2022 12:11:58

Mill slot to size using as small a diameter cutter as you can for finishing then file the corners if necessary. If t was big enough you could just drill out the corners first then mill slot leaving the holes as undercuts at the corners.

Thread: Quick change toolpost
23/08/2022 21:39:47

QCTP drawings usually show the distance from the centre of the spindle to the mount face f the post.

Thread: Gear cutters
22/08/2022 18:20:23

This can get very scientific. In all my years of design I used DP at 14 1/2 deg then module at 20. The DP was because that is what the company had used for sixty years, and had their own gear shop. Moving to metric involved making the gear shop redundant and out sourcing from local gear manufacturers. In design we calculated gear strength to ascertain the tooth size, although we normally used EN24 induction hardened sometimes for strength we had to move upto EN36 or 42. The minimum number of teeth was 18, below that the teeth would be weakened by unercutting. So in answer as far as tooth size matters it is based on centres required and minimum number of teeth. I doubt for most models there is any need for transmission power calculations. There will be lots more answers to come, but that is m simple take. I am sure you know cutters come in a range with a single cutter working over a small variation of teeth able to be cut.

Thread: Tool steel
19/08/2022 13:26:13

Used to use various forms of tool steel for different uses. Most came from Carrs here in the UK. They were always helpful in choosing the correct steel and heat treatment for the particular application. All of this was for cutting tools and fixture components. As has been said that size would probably be a die making steel rather than one for cutting tools.

Thread: EW Equipment
17/08/2022 18:02:51

I have placed a couple of orders with them, with probably twelve months between. During this time the minimum hardness on the cutters changed, probably different source. Both time delivery was excellent, two or three days by post. All cutters were carbide in various sizes 3 to 8mm, latest were better than the previous. I will have no problems with ordering again. Cutters lasted well on steel and cast iron mostly cutting dry.

Thread: Stuck Morse Taper in Warco Major 3024YZ
17/08/2022 13:05:28

Put a piece of mdf or similar dense material on table. Bring the spindle housing down till the spindle nose sits on a suitable piece of metal, don’t lock the spindle housing. No with either the draw bar or a larger diameter piece of metal sitting on the end of the taper, hit it until it frees. What you don’t want to do is apply a heavy blow without supporting the spindle nose. Doing it this way no or very little force will affect the spindle bearings.

Thread: How Much is this Costing Me?
08/08/2022 17:37:38

The simple answer to the original question can surely be gleaned by giving up all machining work for a month, then compare usage. Of course you may during that time put the kettle on more and negate any difference.

Thread: Tiny woodscrews (not exactly engineering...)
08/08/2022 11:47:56

Shop4fasteners

These do a big selection and are usually quick on delivery.

Thread: Refurbishing my bench
08/08/2022 11:43:11

For many years I have used an old large drawing board which was covered with an aluminium sheet about 2mm sheet. It worked great as a portable assembly work bench and easily cleaned. Now my fixed bench top is made from 8” wide 3” thick pine which is occasionally sanded and oiled. If you top is smooth then light sand and oil finish may be enough to give a resilient finish or as stated thin ply which may be a little soft or steel sheet doesnt have to be very thick as it is only a protector. Refinishing may be adequate as it has lasted you thirty years.

Thread: How Much is this Costing Me?
07/08/2022 15:19:32

Had a smart electric meter fitted a few years ago at the second attempt. The first attempt was a year or so before that when I had two fitters spend about four hours trying to get a reliable mobile signal having to ring the office numerous times to see if they had connected, in the end they refitted the old meter.. At that time they said they were evaluating numerous manufacturers before doing any major installs. I guess at the second and final fitting they had established what would work. The gas smart meter was fitted in 2020 just at the beginning of Covid. Although I live on the outskirts of a city some radio signals can be a little weak and don't ask about 5G.

Thread: Do you "still" enjoy driving?
24/07/2022 18:05:06

When I drive to the Yorkshire coast from Leicester other then a short stretch of A1 I can drive on the old A road route I drove on from the 60’s in much the same time as using mostly motorway. Going that way is much more satisfying than being constantly enclosed in other vehicles.

Thread: What would you ban and why? (Definitely tearoom!)
21/07/2022 16:40:53

Ban lorries from overtaking during daylight hours on dual carriageways. I have a length of dual carriageway close by which leads onto the motorway so lorries are always there, during peak morning travel it is not uncommon for lorries to be travelling alongside each other for the whole of the final five mile stretch with an empty road in front of them.

21/07/2022 13:24:52

Seem to remember back until the mid sixties when crisps came only in plain or cheese and onion that you could get both unsalted and salted from Walkers. Yes Smiths crisps had the little blue twisted paper bag of salt. In Leicester we had both Walkers and Smiths back then.

20/07/2022 17:43:04

Having been to the old Walkers crisp factories many years ago and watched the potato to crisp cycle I have no complaints. The flavouring has never been any where near an animal, they are all entirely artificial. Of course things may have changed over the years but I doubt it. Artificial compounds are used in a lot of things these days particularly covering those nasty tasting vegetables mentioned previously.

20/07/2022 13:32:15

We can all accept that both meat and vegetables can be eaten cooked or not, it is a matter of taste and upbringing. Before BSE some of us from the past ate offal in one form or another, OK some of us still do when we can source it for example. The argument can be about processing costs, fuel costs, man hours, factory costs etc. A simple vegetable produced in country is far less cost to get to a household than a processed food. Meat is a processed food in that it has to be harvested from an animal, that we accept. But why say you are being green by eating you veggie burger that has been heavily processed rather than a slab of meat.

20/07/2022 08:24:02

How about banning turning vegetables into so called meat alternatives. In my mind you are either a meat eater or not. Cannot see the sense in using energy to convert a vegetable into anything else when it is perfectly edible as is.

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