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Member postings for Chris Evans 6

Here is a list of all the postings Chris Evans 6 has made in our forums. Click on a thread name to jump to the thread.

Thread: calculation for a sine bar
11/06/2020 13:41:59

I seem to recall information for all the common collet/arbor tapers are in ARC's catalogue. I have several homemade R8 arbors all turned to this information and checked to "Blue" in the Bridgeport spindle. Easier to get right on an R8 than a morse because the R8 is so much shorter.

Thread: Compressor inspection
09/06/2020 09:02:33
Posted by Adrian R2 on 09/06/2020 08:50:29:

I've got one of these which is puzzling me. It's supposed to be 150psi but labours to get up to this pressure and then as soon as it does the safety valve blows and depressurises before the compressor cuts out. I thought the cutout switch was defective so removed it but when tested with a high pressure cycle pump it seems to work as intended (NC, opens at around 150psi, closes again at 120psi).

My current plan is to derate the cut out switch to a 120/90 equivalent, are there any better ideas?

Adrian

Mine did that until I replaced the casting that carries the two gauges and air outlets. About £11 for the new casting /gauges/pressure switch. It now holds pressure for days. Take a look on eBay for compressor spares.

Thread: Mystery TC inserts.
08/06/2020 15:34:51

Normally a torx screw but no tapered hole in the picture shown. Probably of the style that lets the hole locate on a round peg and then uses a top clamp over the chip breaker groove.

Thread: choosing a lathe
08/06/2020 09:24:10

Whenever the machinery subject is raised we get the same tale. Buy old/buy new..If it where not for the imported machinery the vast majority of folk would never get started. My Taiwanese built lathe is now 20 years old and still going well.

Thread: Keeping Shop clean
07/06/2020 10:06:47

I tend to have a regular sweep up and odd session with the Henry vacuum. A really good clean down and wash down of bench coverings before engine or gearbox assembly. I do admire the folk who keep their machinery clean, mine tend to get a brush down/wipe over and oil when it is time to empty the chip tray.

Thread: Morrisflex Sander on an Atlas MF Mill ?
06/06/2020 09:59:23

When I served my time as a mould and die toolmaker we had several MorrisFlex machines for polishing the dies. Basicly a motor driving a flexi shaft mounted on wheels, the motor pivoted to allow the shaft to move through an angle.

Thread: Using Counterbores
04/06/2020 21:08:04

Most (all?) of my counterbores are also bigger around the head than I would like. One day if I can be bothered I will spin them down on the cutter grinder. Got to get energy levels back after a recent stroke first though.

Thread: Recommendations for quality brush for synthetic paints
03/06/2020 15:44:15

Another vote for Purdy. I gave up with Hamiltons a few years ago. I did use some "Brittan" brushes that where very good but not seen any for many years.

Thread: Storing & Documenting Your Tooling?
03/06/2020 15:41:17

Taps/Dies/Reamers are all stored in A4 size "Bisley" drawers with a simple hand written label on the drawer. Regularly used cutters are in Ikea wooden drawers with the size range written on. Most other cutters are in a selection of boxes which I sort through to find what I need. I can remember where most stuff is but with several hundred cutters it sometimes takes a search.

Thread: Workshop Gloves
30/05/2020 09:31:43

I wear gloves a lot when working on the cars or old bikes. I never wear them on the lathe or mill and can't subscribe to the theory that they will tear and not do harm.

Thread: Nick from South Derbyshire
29/05/2020 14:40:55

Welcome along Nick, enjoy your new hobby. Nearest bit of South Derbyshire to me is Lullington about 10 miles away.

A beautiful county.

Thread: Hydraulic Motor
26/05/2020 09:00:17

In my working life I used a few hydraulic motors for our applications. All where made by "Danfoss". Worth a Google to see if they are still around ?

Thread: Needle rollers
25/05/2020 21:11:31

Try Simply bearings, they are my go to supplier. If not listed on their web page they may still be able to get them for you.

Thread: Myford MG9 grinder
23/05/2020 22:11:55

I have used a mate's Myford grinder a few times. I will ask him what model it is and if he has any info for you. May be a delay with the copying if he has info due to the covid 19

Thread: Used Lathe Pinnacle PL1340C Gap Bed
23/05/2020 09:19:22

I guess once the lathe arrives it will be a few weeks before installation is completed. Be nice to know it got there safely though.

Thread: Thanks from down under
23/05/2020 08:45:52

Bridgeport is well worth the effort Craig. I must get around to fixing the table feed on mine one day. Some threads on this site re table feed if you do a search.

Thread: Macro rust spots.
21/05/2020 12:06:16

The wire cut EDM process is done with water. Either power flushed or submerged. If the distillation of the water is slightly out or the part left a while after cutting you get the results shown. As far as I am aware only the very early Japanese "Sodik" brand machines used a paraffin type dielectric like a normal solid sink EDM (spark erosion) machine At the end of the day it is down to slight impurities.

Thread: New member from Shropshire
17/05/2020 19:08:25

Welcome along Craig, enjoy the banter and knowledge.

Thread: Just saying hello
15/05/2020 09:19:46

Welcome along Mark.

Thread: Used Lathe Pinnacle PL1340C Gap Bed
15/05/2020 09:17:05

My 3 HP Excel lathe runs from a Transwave static inverter and has done for 8 years. On odd occasions it sounds "Wrong" turning the inverter of for a while and restarting cures it. Talk to Transwave to see if it would run a two speed motor, I have my doubts.

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