Here is a list of all the postings Stewart Hart has made in our forums. Click on a thread name to jump to the thread.
|Thread: Small drill bits, <<1mm|
Use to do a lot of small hole drilling at work we always used Titex drill from Germany there expensive but are very good. some followed me home. I've tried the cheep Chinese stuff and they are rubbish some of the sets you can buy at shows are not too bad, some one in China must make good small drills with the stuff that they make I guess they keep them for them selves.
Small drill really need high speeds to work really well so why not make a high speed drilling attachment like this one I made
|Thread: pottyengineering universal tool post fixture|
Hi Just completed a universal tool post fixture, it uses a commercial spindle bought of the internet, the video is quite long so I hope you don't get bored with it
|Thread: Lamp Post Engine|
I Like that very much
|Thread: Starrett type clamps|
Wow Andrew they look superb the black finish really sets them off. How did you degrease them for the blackening process
|Thread: Wot's this for ? help please|
I think Jason is correct its just a crude spacer to go between spacer and pulley to take some of the thrust, as for the other end I'm going to fit a sleeve between the slightly larger collar diameter and the bearing locating on the inner race this should take up the thrust, I'm unsure wether to fit another spacer between the two bearing again on the inner race so that they share the thrust. I want to see just what duty these spindle will do, there's a few videos of them in use doing light work.
Just what I'm planning to do with it you'll have to wait until next week some time when I've got the fixture completed I'll post a video of it in action hopefully:- its another bit of pottyengineering devilry .
I was thinking it was something to do with end thrust the shaft is a tight fit in the bearings but I cannot see how end thrust when drilling will be restrained I’m intending to use Loctite to fix the bearings better and ditch the clip
Thanks for your input chaps
Hi Brian that was my thoughts but it’s a lose fit on the shaft there’s no groove on the shaft or in the bearings for it to fit the bearings which are flanged are fully home
I bought a spindle and drive belt for a project I'm developing as part of the kit there was a small "C" clip that I can't for the life of me work out where it goes see attached picture, its got something to do with the bearing assembly but that's as much as I can work out there is no obvious place for it to go. Can any one shed a bit of light on this mystery
|Thread: Starrett type clamps|
Thanks for your feed back and tips Andrew I never thought about sticking them together I've experimented with two way sticky tape but with mixed results:- loctite 638 is certainly good stuff and will hold the knob in place my welding them in place is a good example of over kill. Any chance that you could post a picture in the thread of your clamps
Thanks for all your interest in these clamps chaps
I actually used imperial bar so 5/8" is indeed 15.88mm I'm sorry this may have confused a few of you. But its your workshop so your free of the chief inspector you can make things to any size you want as long as you exercise a little gumption.
I use the metric system for one simple reason:- its the industrial standard for most of the world this makes metric tooling and parts extremely cheap when compared to imperial stuff a fact that is very important in most home workshops.
I try to make all my designs simple and cost effective for the beginner as Jason said, but I do find it difficult at times getting thing down to the beginners level, especially that these days youngsters are taught very few basic practical skills, consequently things us oldies think are obvious go over peoples head. My own son whose a medical doctor phoned me up the other day for advice on how to shorten a curtain rail using a hack saw. I had to explain to him the different types of saw how to tension the blade and how to keep the cut straight. I can assure you that he didn't have a neglected childhood, like may of his peers he just wasn't interested in engineering thing, but he did ok despite this.
|Thread: 2-6-0 Horwich Crab|
I think I used primer on my first loco it’s stood up to many steaming I do know I was very careful to get everything cleaned and oil free using a gunk type solvent and white spirit
Thanks for your comment old mart
Greensands the smoke box is not painted it’s made from welded seam mild steel I think it must have been hot rolled hence the black surface. For my other loco I used black engine paint from Halfords on smoke box and chimney just two coats. For the tender and rest of the loco the brass gets a coat of acid primer followed by two coats of precision paint followed by two coats of clear lacquer from hobby craft I use a wide soft artist brush again fresh hobby craft I can’t get on with spray cans. I try to do one face at a time keeping it horizontal to reduce the risk of runs it takes a long time doing it this way but it’s the only way I can avoid runs
Hope this helps
Edited By Stewart Hart on 22/05/2020 18:34:04
Time for an update, this lock-down has certainly speeded things up:-
Chimney, Smoke box, door and saddle
Trimming smoke box to length
Smoke box saddle fabrication
Completed smoke box door
its begining to look like the finished loco now
|Thread: Simple Mill Engine - Stewart Hart ME.4460 - Part CP11|
Well Done Jim a great runner I hope you enjoyed the build
|Thread: How are your clubs responding to Coronavirus|
South Cheshire MES has cancelled all Birthday Parties, Public Running and club meetings until further notice.
My Grandmother once wrote to Winston Churchill on Izal toilet paper to complain about the meagre widows pension apologising to the great man for using toilet paper as she couldn't afford proper writing paper.
|Thread: Locked out of computer|
I was looking something up on the banggood site this morning when the screen went blank and briefly flashed locking and everything went dead and I Just can’t switch back on 😭any ideas about what has happened have I caught a virus I have Norton protection
|Thread: High Speed Drilling Attachment by pottyengineering|
I've been puzzling about that also I did this check on alignment
And everything looked good, so I'm wondering if I got the drill slightly of centre in the chuck with those small drill its easy to grip it with just two jaws I was also wondering if centrifugal force was whipping the point out, though that doesn't seem to happen when I had it in the mill. It didn't seem to effect it much though.
Thanks for your interest
Edited By Stewart Hart on 31/01/2020 18:38:48
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