My Clausing 100 mk 3 Serial# 5396

OK. If you are used to haviing the STOP button at the right end, then do it that way. My way was the generic way, generally best for the general public. Just put the JOG REV switch under the REVERSE button.

The Atlas 3900 Series (less the 6" 3950) did come out after Atlas bought Clausing. The only major change from the previous models besides a general increase of weight was moving the tailstock lock from the front to the rear of the tailstock. A lot of owners dislike that but it never bothered me. The only other change of significance was that they kept the Atlas part numbers of all parts carried over from the previous models, which was good. But all new parts, starting with the bed, got Clausing type part numbers, which was decidedly bad. Clausing's part numbering system was one of the poorest I have seen.
 
Well have everything wired except the cabinet light switch. Great to be able to spin up the lathe again...

I have a 15A breaker inside the enclosed plus a DPDT selector master switch to turn on the VFD. Have read that it is suggested to also install fast acting fuse between the CB and the inverter. Is it necessary and any recommended fuse holder and fuses?

Got the two LED lights from Lowe’s.
 

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Well making progress. Disassemble the spindle from the head stock and left the back gear assembly in place. Removed at the paint from the bed. It was literally flaking off to bare metal with the needle scaler. Wire wheels, prime and paint with Rustulem medium gray paint.

Going to replace the five bearings in the QCGB with1622-2RS bearings. The old double shield bearing stiff with old grease. Little bit a puzzle taking it a part. Like a rubric cube.

What is the best order in disassembling the gearbox to replace the bearings?

I am replacing the standard apron with the advance apron. Believe I have one from a 4800 lathe with oil sight gauge on bottom of tail stock side. The standard carriage saddle holes are off by about 0.030“. Will oblong the saddle bore holes to fit the new apron.
Sir : I have just got a clausing lathe 100 series mk-a and i would like to do the same thing as you on changing the apron over to a QCGB. Do you know of any available parts and advice? Thank you for your time> Mike
 
Sir : I have just got a clausing lathe 100 series mk-a and i would like to do the same thing as you on changing the apron over to a QCGB. Do you know of any available parts and advice? Thank you for your time> Mike

Hi Mike, Love Missoula - My wife use to live in Helena Still have alot of friends in MT.

I was collecting parts on eBay 10-15 years ago. As you probably notice, Model 100 parts are scarce now. Do you have a serial# and any photos?

My lathe was the last revision 'Mk 3' before Atlas bought them out. The Atlas version is 4800 series. I have found small difference with some of the parts. My lathe was original the 'Simplified' version. Now it is mostly the advance version minus the hand clutch on the headstock and the carriage lead screw. Had to grind a little bit of carriage casting to get the advance apron to mate to the carriage.

These are great small lathes to use. Would like to see photos of your lathe.

Bob G.
 
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Finish mounting a SPDT Momentary two position toggle switch to turn on the cabinet led lights when the door is opened. Used a Stihl oil container as a shield around the switch. Pop rivet a piece of aluminum angle to push the toggle switch handle.
 

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I bought an iGauge Absolute DRO 36” and 12” scales about five years ago. Never got around to install it. Good time to mount the scales before moving the cabinet to its final position.

Some one had posted about using magnets to temporary hold scales in place. I collect the rare earth magnets out old hard disk drives. Use heat gun to loosen the adhesive holding magnet to its bracket. Ready to drill/tap two 1/4” holes at the end of the carriage. The bracket will attach the scale reader. Will have the bed scales finished on the next post.

Been quiet around here lately...
 

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Bob:
Do you know if a apron off of a clausing 4804 will fit on a clausing 100 series mk3a lathe?
Thank you for your time.
Mike
 
Hi Mike, Love Missoula - My wife use to live in Helena Still have alot of friends in MT.

I was collecting parts on eBay 10-15 years ago. As you probably notice, Model 100 parts are scarce now. Do you have a serial# and any photos?

My lathe was the last revision 'Mk 3' before Atlas bought them out. The Atlas version is 4800 series. I have found small difference with some of the parts. My lathe was original the 'Simplified' version. Now it is mostly the advance version minus the hand clutch on the headstock and the carriage lead screw. Had to grind a little bit of carriage casting to get the advance apron to mate to the carriage.

These are great small lathes to use. Would like to see photos of your lathe.

Bob G.
Bob :
I found a apron and lead screw off a clausing 4804 lathe. Do you think it will fit?
Thank
Mike
 

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Bob :
I found a apron and lead screw off a clausing 4804 lathe. Do you think it will fit?
Thank
Mike

Hi Mike,

The QCGB and the advance apron I installed on my lathe was definitely from a Atlas-Clausing 4808 lathe. The gearbox fit perfectly. The apron was not exact bolt in. Had to grind about 1/8" carriage casting where the apron mounted and two apron holes where off by 0.030" enough that I filed the carriage holes in order to bolt . The other difference between the two lathes is the lead screw diameter. The 100 is 3/4" and 4808 is 7/8" The thread pitch is the same.




Are you referring to the lathe in the picture? If so, I going to say the lathe really is a Clausing 100 Mk3. Visit this website to see the differences.


Good history regarding Clausing lathes everyone refers to.

Clausing 1944 100 mk3 12x36 Lathe .jpg



These lathes can usually be dated by getting the lathe serial number stamped in the lathe bed by the tailstock in photo above.

A call or email to Tom McNett" TMcNett@clausingsc.com at Clausing help identify the year was made or sold.

I also notice that all major component had a unique stamping# so you can tell if the headstock, apron, carriage, bed, tailstock, etc was swapped out from another lathe. This may because these components may have been fitted during assembly.

Bob g.
 
Bob :
I found a apron and lead screw off a clausing 4804 lathe. Do you think it will fit?
Thank
Mike
Hi Mike,

The QCGB and the advance apron I installed on my lathe was definitely from a Atlas-Clausing 4808 lathe. The gearbox fit perfectly. The apron was not exact bolt in. Had to grind about 1/8" carriage casting where the apron mounted and two apron holes where off by 0.030" enough that I filed the carriage holes in order to bolt . The other difference between the two lathes is the lead screw diameter. The 100 is 3/4" and 4808 is 7/8" The thread pitch is the same.




Are you referring to the lathe in the picture? If so, I going to say the lathe really is a Clausing 100 Mk3. Visit this website to see the differences.


Good history regarding Clausing lathes everyone refers to.

View attachment 345228



These lathes can usually be dated by getting the lathe serial number stamped in the lathe bed by the tailstock in photo above.

A call or email to Tom McNett" TMcNett@clausingsc.com at Clausing help identify the year was made or sold.

I also notice that all major component had a unique stamping# so you can tell if the headstock, apron, carriage, bed, tailstock, etc was swapped out from another lathe. This may because these components may have been fitted during assembly.

Bob g.
Bob:
Thank you for all the info and your help is greatly appreciated.
Thank you for all your time.
Mike
 
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