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Is buying a custom ground tool my only option??

Is buying a custom ground tool my only option??
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Simply Bearings , Shop Made Comparator , வெறுமனே தாங்கு உருளைகள் ,

Myford ML7 headstock belt length | Model Engineer


Quick question - looking to replace the drive belt on a ML7 that runs from the countershaft to the headstock spindle. The one that s on it (although in horrible condition) measures 24.5 around the outside, but I see on the Myford website that they sell a 23 inch belt for this application, but don t state if this is an internal, external or somewhere between the two size.
Having done a bit of measuring around the pulleys with some electrical flex, I don t see how 23 inches would possibly be long enough unless the adjusters are screwed right in and the 23 inches is measured around the internal surface of the belt. Even then I think it would be tight. ....

Simply Bearings , வெறுமனே தாங்கு உருளைகள் ,

Roller skate bearings. | Model Engineer


1 articles
A place where I worked in the 70 s had quite a lot of sets of radio gear that used a quite nice fan with a machined alloy case and blades to suck the hot air out. The trouble was that they chopped out the bearings quite frequently. One of the bosses had a son who was into speed skating at the national level. Whenever we found a fan that had gone noisy, we would change out both the bearings and put in new ones. The old ones had to go to the boss guy so that he could put the OK ones into the skates, since they were the exact same size. Usually only one bearings had actually failed, you could feel the grittiness where they had gone through the hardening. I suggested that perhaps if the bearing at one end of the fan had gone, the other might not be far behind and that it might not be a fun experience to have a bearing decide to seize up when skating as fast as possible, but it seemed they were OK with that risk. ....

Robin Graham , Bernard Wright , Simply Bearings , Slick Willies , Ceramic Reds , ராபின் கிரஹாம் , பெர்னார்ட் ரைட் , வெறுமனே தாங்கு உருளைகள் , மென்மையாய் வில்லிஸ் , சிஇஆர்ஏஎம்ஐசி சிவப்பு ,

DIY Dobsonian Telescope Mount | Model Engineer


All, I thought I d share this telescope mount I ve been building. Every year for about the past 5 years I’ve been saying “I’ll get this done for February and get some use out of it in the clear winter nights” At last it’s done, now for the clear nights.
I bought a Meade 10” Starfinder second hand back in 1997, but never really used it because of the hopeless equatorial mount which vibrated at the slightest touch, and had huge stiction issues. It didn’t even track properly. I therefore decided to take the plunge and design and make a Dobsonian Mount. ....

Broderick Jenkins , Dobsonian Mount , Simply Bearings , ரோடெரிக் ஜென்கின்ஸ் , வெறுமனே தாங்கு உருளைகள் ,