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This video is an excellent description of the technique: https://www.youtube.com/watch?v=wMA6_sE1VaQ Regards, Mark markrages@gmail
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Slightly off topic, How to set tapered roller bearing preload
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This is one way to lube and pre-load, tapered roller bearings -- via YouTube https://www.youtube.com/shorts/BTS421UzBxs?feature=share It appears the answer is firmly tight...!
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I have the cross slide from a mini lathe mounted on my small woodturning Rose Engine lathe. As this cross-slide is metric and the current graduations on the compound hand-wheel are only 0-39 rather than 0-10 with intermediate graduations I decided to look for an alternative that allowed the resetting of the graduated dial. I found this one on Temu At the time I bought it the cost was ?17 but I see that it has since increased slightly in price. As the 8mm hole in the centre of the new hand-wheel had a keyway slot in it and it wasn't deep enough to used the mounting threads on the lead screw I mounted it on my metal lathe and bored and reamed the centre hole to 14mm. I then turned a T shaped steel spacer with a M10 thread in the centre that I press fitted into the 14mm hole and used Loctite to keep it in place. I then used a 1mm thick brass washer to separate the hand-wheel from the mounting and used the conventional second nut to reduce the backlash in the compound and to lock the hand-wheel in place. The graduated dial is slightly larger than fixed base but for my use I don't think that this will be an issue. The cross-slide has a similar problem with the graduations and I happened to have a larger ring with suitable graduations on it but the centre bore was too large to fit. As a result I left the existing small graduated ring in place and 3D printed a spacer that grips the small ring tightly and has just enough friction to retain the outer ring but to allow it to be moved if necessary. -- Colin Spencer
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Maybe have day a week for off subject
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Group Guidelines is only on lathe itself. Maybe if we Sunday off subject day for projects and other things. Groups that have off subject treads have great numbers and some time year is only thread that getting post. It keep the group alive. Dave
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After researching of motors are 221¡ãF [105¡ãC] after that the life is shortened. The outside temperature is about 60¡ãF to 70¡ãF [15 to 20¡ãC ] less the coil temperature. So if outside is could be wend the coil is 221¡ãF [105¡ãC] the outside is between 151¡ãF and 161¡ãF [85 an 90¡ãC]. On my gauge I set the red mark at 80¡ãC and 105¡ãC. If I see gets never red it time to let motor cool down and gives little to finish the cut. The Capillary is attached by HVAC Aluminum tape , max temperature is 145 ¡ãC at this point the motor is toast Dave
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Brushless mini lathe motor torque chart compare to DC motors. I know the DC motors have very high torque as the motor slow down. The standard ac squire cage motor is about same the rpm's drop off. But do not know what torque is on the Brushless electronic DC motors?. FYI Simple to compare the DC vs AC is. The old time heavy duty drill motors when star to slow you feel torque. AC motor like fan you stop it a small stick. Dave
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My "Jupiter 1" pencil sharpener has a 45 mm wheel for cutting. However, the cuttings are not very good now after many years in use. So, I am asking you for advice on how to scarp the edge. The scarp edge of the knife is being a little bit round. Look at the pictures, Shall I scarp side A or B ? Ps. Thanks to all for advice on how to make the 2 missing screws. Johannes Mexico
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Thanks for all the tips. I put a big "toothpick" into the hole and twisted, and the best I found was 0,6+ pitch on a ca 3 mm hole, and do to the big .xls from Kerry , a 1/8 is very close, and it will be tested out tomorrow. As you can see from the picture, it is a very short hole. So, 55 or 60 deg is not so important. There are some restorations on YouTube , and I will try to contact them for a picture of the head of the screw. Johannes Mexico
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Paul M: I did what you told me. I found a gauge plastic plate from LMS, not used for many years, and tested many screws. All fit in same line : N.F TPI. So the 2 missing screws have to be there. So is this correct: 100 years old Hamburg tool factory used UTS. Johannes Lavoll.
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Replacing the control board
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Replacing the control board with or without replacing the motor. I like matching the control board the the motor. I found most control boards fail because either dust or pood design. Next is owner playing with board. Voltage spikes can be problem in some location but power strip with protection should work. I found yearly cleaning of boards exstens the life includes my mini lathe control board, welders , PC tower and my home's AC Please comment on your experiences with boards. {The DC motor have about 6 adjustments . Most mini lathes I seen only has 3 you can adjust 1. Low speed 2. High speed 3 . Max Torque. The rest are per set on board like 4. Torque acceleration 5. Breaking 6. Slope speed increase There some boards 6 adjustments 1. Low speed 2. High speed 3 . Max Torque. 4. Torque acceleration 5. Breaking 6. Slope speed increase There are are few more but almost never seen or better way not need a engineering going wild. The brushless has about same thing but a little different Like speed increases is slowly increasing the frequency. I know more but have had must do with brushless.} Dave
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Mini lathe DC motor longevity
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Look at improve the longevity of the mini lathe motor. I see a lot members having motors problems. Now is from environmental , operator , motor control board or motor errors? FYI There are two basic type use on mini lathes DC motor and brushless aka {electronic 3 phase} motor. This only on the DC type. Please post how fix or you replace motor. Dave
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My.motor.is.behaving.badly. How.do. I inspect the motor? Do I just flip it on its side to get to the motor?
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7x12 Motor Won't Turn On
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Had a crash awhile back while using a milling bit on my Grizzly 7x12 mini lathe. Motor stalled and fuse blew. I put in a new fuse, but motor won't run. Are there any other circuit breakers/fuses that could be the problem? Or, am I looking at a blown motor?
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Off topic just FYI
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This just FYI. My temperature for this month was 79¡ãF thank God for AC My mini lathe is a small shop without AC so have to other things. I only bring up heating because it can have a effect on your motors and you. I know some think humans are powerful. The last time I saw heat like this was 1972 when I was working as a iron worker. I did Iron work when I in high school and college. It paid for college and a nice machine shop tools. But outside in the heat. So if born after 1972 you think it is hot. You have to go back 1905 for hotter days. To cool off earth try a few big volcanos this lower to earth temperature by few degrees. I did not know if humans has any thing to do with the temperature increase is about all say on subject. I look pass Dave
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And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in ralphie
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Double OT Hot Hot Hot
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Whole lot of ¡°maybes¡± in that article. Also says the excess water will be up there for ¡°maybe 10-15 years¡±, while if you read the actual paper is says ¡°maybe 5-10 years¡±, so who know what orifice the reporter pulled those numbers from. Meanwhile CO2 hangs around for a 1000 years. Maybe people would take notice if we fired off a massive volcano every decade instead. Tony
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I was wondering why fleeling Hot Check tv . No one is letting run my mini lathe.
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There one use I use smalls a lot for painting. Need to cover badway and part lathe you do want dots on. Here simple project that makes a lot women happy back in 1995 the had Painted Yahtzee for the computer. They never made dice for this game. So can make your wife very with your lathe and nes 4 jaw chuck. On the mini lathe you can paint the dice the different colors. Wash off dice using rubbing alcohol. Use your 4 jaw self centering chuck and chuck up the dice for painting. It takes 5 colors using Testors 9146XT Promotional Enamel Paint. Note you buy purple or mix that color. Now just just use tool post to steady your and paint each color let dry between colors. Some dates you need to use white in dots to stand out. You only one on the block with Painted Yahtzee. I have included the paint chat , score pads and rules in PDF in the down load section. /g/7x12MiniLathe/files/99%29%20painted%20Yahtzee%20on%20mini%20lathe%20file I have used the lathe for a lot for painting Dave
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Vevor parts
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The Vevor 7x14 lathe I bought has no parts list and does not always match what is on other mini lathes. The quality of the parts has not always been the best. The keyway in the shaft for the "A" timing gear is not centered and does not allow the gear to go on without a lot of force. I need to prey it off with a screwdriver which takes a lot of one side/other side reps. The plastic timing gear are VERY tight on the shafts. The timing belt has 90 teeth rather then the standard 70. If I knew all of this before I bought it I would have passed on it. Has anyone else had any problems?
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My ok to polish the knives today as long not over 10 minutes. It also 98¡ã in hobby shop at 10:30 today. This what used to polish the knives. Hope you put other uses for your mini lathe here for all to see. Still could not turn the plexiglass rod it take to long in 108¡ã F day. Dave
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Sat 8:39am
Sat 8:39am