Here is a list of all the postings JohnF has made in our forums. Click on a thread name to jump to the thread.
Thread: Myford |
19/09/2012 00:37:17 |
Hi search this forum for ER32 Collet Chuck --- there are a lot of posts on this matter I bought from RDG and was very pleased with the result John |
Thread: Brightening old tired metal |
06/09/2012 10:59:09 |
Hi Mike, What material is it ? Steel, Brass, Alloy, etc ?? and what is it for or off, is it part or all of a machine or model or a complete unit ?
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Thread: Guage Plate |
30/08/2012 10:49:45 |
Hi Deltic, Any steel supplier will do or your local engineering supply house will probablyhave it available. Try the following links Look for "ground flat stock" If you PM me I might be able to find a small piece for you--I have quite a bit of it around and if you buy it you will have to buy a standard 16" length I think. Regards John |
Thread: why do I keep snapping drills |
20/08/2012 21:35:33 |
Hi yes the Arc attachment looks good but you should not need for 2.5mm drills unless you machine is VERY unsensitive! I have drilled lots of 0.015" holes in the past on a jig borer and for this made a sensitive feed but down to 1/32 [.0315"] it was not necessary to use this. As peter says ally can be difficult if it is the soft type alloy most others drill easily and parrafin is a good lube. Your speed is way to low. Buy good quality drills , Dormer, Hertel, or similar high quality European made drills, yes they are expensive but cheaper in the long run because they work! try Rotagrip, J&L now MSC supplies or your local engineering supply house good luck. John |
Thread: Myford lathe tools |
20/08/2012 13:47:28 |
Posted by JohnF on 20/08/2012 11:20:47:
Mike , I have had my S7 for nearly 40 years and use a dickson tool post, I would strongly recommend 3/8 or 10mm shanks. That is what I use and no problems with height, the stiffer the tool the better results you will get.. Also worth getting a couple of the Dickson "Piddington style" extended tool holders to use when supporting work with the tailstock centre. I also recently purchased a tipped parting tool but I do prefer the original Dickson one with Eclipse HSS tool bit --- mainly due to the excessive overhang created due to the design of the tipped one I purchased [Glanze] -- not knocking Glanze I think their other tools are very good and probably this design is OK on larger machines. Might re-jig it with a dedicated holder when I get round to it !!! Another point to watch the original Myford / Dickson tool holders were 0.225 thick at the bottom most of the import clones are 6mm 0.236" and some are 0.250. Worth measuring before buying . Look at A & R Precision they have been making for Myford and the holders are top quality.
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Thread: Magnetic swarf removers |
20/08/2012 11:31:27 |
Look big and clumsy to me. i have one of these http://www.arceurotrade.co.uk/Catalogue/Hand-Tools from Arc Euro, works fairly well but you still need a brush or vac to clean up. John |
Thread: Myford lathe tools |
20/08/2012 11:20:47 |
Mike , I have had my S7 for nearly 40 years and use a dickson tool post, I would strongly recommend 3/8 or 10mm shanks. That is what I use and no problems with height, the stiffer the tool the better results you will get.. Also worth getting a couple of the Dickson "Piddington style" extended tool holders to use when supporting work with the tailstock centre. I also recently purchased a tipped parting tool but I do prefer the original Dickson one with Eclipse HSS tool bit --- mainly due to the excessive overhang created due to the design of the tipped one I purchased [Glanze] -- not knocking Glanze I think their other tools are very good and probably this design is OK on larger machines. Might re-jig it with a dedicated holder when I get round to it !!! |
Thread: The Best of Model Engineer Vol 1 |
17/08/2012 22:51:01 |
look at your P/Messages |
Thread: Bridgeport riser block 4" or taller |
17/08/2012 22:48:12 |
Dave there was an article some time ago in the Amesrican magazine Home Shop Machinist regarding making one and I think it was made on the mill? Google HSM and see if you can search the archives. |
Thread: Turning Phosphor Bronze |
17/08/2012 22:35:28 |
Wolfie, turned a lot of the stuff in industry, lots already been said but I would suggest always a corner rad on your tool --say 0.020 minimum and a top rake of 7 - 10 deg. I would use HSS I am sure there are specific TCT tips for this material but I don't think the general grades would work well at all [not tried them] and on home machining I recon you will get better results with HSS -- besides you can alter your tool geometry if you think it will improve the result--if it does not you can revert back -- not with TCT's !! Best flooded with coolant to keep cool but not always practical in a home shop so might be worth allowing a little "cooling time" now and then whilst working. Drilling -- I can already hear the shouting !!!--- we often used to grind the drill a little off centre so it cuts big to help prevent binding then of course bore the hole to size or to straighten before reaming--lots of lube! works for copper as well. Good luck---John |
Thread: 8 BA Grub Screws |
17/08/2012 22:15:03 |
Kevin, try J & L now MSC but if you PM me I think I have some in the w/shop --away until Sat pm. John |
Thread: A Part For Myford Super 7+ Can It Be Done |
17/08/2012 22:11:57 |
Should not be a problem, the oil guns in general lubricate the operator more than the lathe ! The latest one offered is much better but still not perfect but there are a cuple of posts for mods to same. Try Arc Euro see advert on this site. Just looked---- search for "myford oil" on this forum and a mod comes up Edited By JohnF on 17/08/2012 22:17:57 |
Thread: Lithium Ion Batteries |
16/08/2012 23:39:03 |
Well thanks for all the info guys, I will if need be buy another but did contact AEG again because I saw a lot of suppliers saying this battery was discontinued and AEG now seem to be more forthcoming -- time will tell and I will post the end result. Andrew J thanks for that link makes reading--quite a bit over my head but will read again to get a better understanding -- but zapping is not an option---thanks! Adi, my last drill had Nicads and it is a thought, the supposed advantage of Li-Ion is full power to discharge point which is true but unlike Nicad they just stop ! no warning like Nicad where the drill slows progressively, if you pause and run again it give you enough recovery to say extract your drill bit but thats about it you must recharge regards to all John |
15/08/2012 21:46:20 |
Hi I have seen a lot of info about "zapping" nicad batteries that appear dead---is it possible to do the same with Li-Ion batteries? Have a 18 month old battery from an AEG drill and gone duff -- although advertised as 3 year g'tee I now find it does not cover the batteries !! Anyway any info advice welcome -- or do I have to bite the bullet?? Out of my depth with electronic wizardry! Thanks John |
Thread: Help! |
14/08/2012 23:12:44 |
Chris, I am not "into" steam railway engines however I don't think you will find ready machined parts for your engine. These projects are made by individuals who want to make the model themselves. Only possibility s to find someone willing to machine the parts for you to drawing but beware some of the drawings can be a bit "ify" by all accounts. Also if you go this route be prepared for a hefty bill -- time is money as they say. All the best John |
Thread: Welding Gas |
14/08/2012 22:24:57 |
Had all my cylinders [4] off BOC so was spending a fortune in rental £240/year, all gases other than acetylene are available but I need this for a Eutectic metal spray that I use a lot -- propane just won't do hence my search for an alternative suppler who would sell me the bottles. Albee / Air Liquide charge £120/140 for the cylinder depending on size --one time payment and that includes a fill of gas at about £45 depending on the gas & size. Each cylinder comes with a new valve and regulator fitted each time you refill. Steve -- can't be sure but I don't think Air Liquide are associated with Air Products but stand to be corrected. John |
14/08/2012 13:48:59 |
Hi Everyone, just to let all know there is a "new" source of gas for welding--alternate to British Oxygen and Air Products. Air Liquide have started supplying all gases including Oxy Acetylene in bottles you can buy rather than rent, it is under the brand "Albee Gas" You buy the bottle and its yours for life and refills are about £40 for 11lt bottles about 6 hours continuos welding ! Look at this link http://www.albeegascylinders.com/ look for your local agent. A lot cheaper long term than renting from BOC etc. PS I have no connexion to the suppliers I found them after a search for Acetylene supplies after receiving my renewal from BOC rental Regards John F
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Thread: Strange Noise from Myford Super 7+ |
07/08/2012 23:47:21 |
Bob, does it do it on all speeds or only on high speeds? I have a S7 long bed purchased c1977'ish and had a problem on top speed--the bearing was too tight, Not sure if the big bore has a plain front bearing??? On mine I adjusted the bearing as per instruction book and it has been fine ever since -- will run contiuouse on top speed. John |
Thread: Question about MEW Digital content |
01/08/2012 19:38:10 |
Hi Dunc, Have a look at issue 161 there is the start of an article by Harold Hall making a filing machine. Aslo look at this link for a info on the forum http://www.model-engineer.co.uk/forums/postings.asp?th=40481 Good luck John |
Thread: New ER25 collet blocks |
25/07/2012 23:18:07 |
I bought some ER32 ones from Arc Euro, very useful item and excellent quality. John |
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