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L&R Cleaning Machines

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rgus New Member

rgus

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I  removed the timer assembly and found that the trigger bar had been pushed back. I spun it back around so that it would make contact and in the process a wire let go  poor solder joint.     I have two ultrasonic base units I would like to send to someone and get them repaired.  Is there anyone around that  troubleshoots/ repairs them?

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bobolink
bobolink

I acquired an L&R Master off eBay months back.  It was  dated 1954. It looked tired and after receiving it ran really poorly.   So, I embarked on a rebuilding project.   I am writing this  because

ED209
ED209

Greetings everyone, hope all is well.   Well, it's done.  I don't call this a full restoration due to lack of skills and still learning techniques, etc. so we will call this a half or semi-r

ED209
ED209

A few more glamour shots with all the accessories (jars, lids, baffling, stars, etc.).   I also figured out why switches come with two mounting nuts....I didn't realize it was to adjust how

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rocky Member

rocky

Posted
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hi, I found a Old L&R master watch cleaning machine , marked L&R master
any idea on how old the machine is ?
will post a couple of pictures is asked ?
also is the electric cord have a two or three prong plug ?/
please post, many thanks, rocky
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rocky Member

rocky

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hello all , can someone please assist me I require a wiring diagram

for L&R watch master [ serial range 79,xxx ] someone replaced the

electric cord and wired it direct.

 I have read these a wiring diagram under the plate on the bottom

of the machine , mine is missing the plate,

can some please post a picture, many thanks, rocky

 

 

 

 

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HectorLooi Distinguished Member

HectorLooi

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If you can't get an exact size, just get something slightly larger and file/sandpaper it down to the correct dimensions. If the pigtail wire is too long or has a different terminal, cut off the old terminal and spot weld or solder it to the new brush.

I do that all the time for the motors I repair.

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Nibbler WRT Addict

Nibbler

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Old post new user.

Here is a 3d print of a "scaled" mason jar lid. Scaling doesn't always work for 3d print files unless they are parametric designs. It worked well  in this case.

374583869_download(3).png.0fc76e96ded43d1744ed14ce856b607a.png1924839864_download(2).png.7b9af44ceb174ac2fc93beaca13c0e0f.png366257157_download(1).png.e5b072b084ca63a6d2e3bfdf6bbe5e6b.png

The L&R cleaner and rinse I am using came in plastic jugs so I am expecting PLA printing material to holdup just fine. ABS could also be printed.

I started with the stl file below and expanded it so the absolute outside dimension was 4 inches between the tips of opposite points.

Enjoy, 

Matt

 

wide_mouth_jar_lid.stl

Edited by Nibbler
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TThom New Member

TThom

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I've got a couple of machines, a Mastermatic and a vari-matic.  I have to restore both, but started with the Mastermatic.  Got it torn down, but the basket motor is beyond my capabilities to restore.  Does anyone know of a shop in the US (I'd be glad to ship) that could handle the motor repair/restoration?

 

Thanks!

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B42Woody Member

B42Woody

Posted
Posted (edited)
On 12/1/2020 at 4:34 PM, Nibbler said:

Old post new user.

Here is a 3d print of a "scaled" mason jar lid. Scaling doesn't always work for 3d print files unless they are parametric designs. It worked well  in this case.

374583869_download(3).png.0fc76e96ded43d1744ed14ce856b607a.png1924839864_download(2).png.7b9af44ceb174ac2fc93beaca13c0e0f.png366257157_download(1).png.e5b072b084ca63a6d2e3bfdf6bbe5e6b.png

The L&R cleaner and rinse I am using came in plastic jugs so I am expecting PLA printing material to holdup just fine. ABS could also be printed.

I started with the stl file below and expanded it so the absolute outside dimension was 4 inches between the tips of opposite points.

Enjoy, 

Matt

 

wide_mouth_jar_lid.stl 2.81 MB · 1 download

Thanks for sharing!

The OD of the threads on my L&R jars is about 3.75".  Yours is 4"? The Mason jar threads match the L&R threads once you scaled the model?

Thanks again!

Woody

Edited by B42Woody
More info added.
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B42Woody Member

B42Woody

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On 1/24/2021 at 2:52 PM, Nibbler said:

So the 4 inches is an outside dimension between the points of the lid.

 

 

IMG_0948.jpg

Thanks.  I measured mine with a caliper.  They're 95mm or 3.74" OD (between the thread points of the jar).

When you scaled up the Mason jar model, do the threads (pitch, height, etc) match your jars?  In other words, do the lids you printed correctly thread/screw onto your jars?

Thanks again!

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B42Woody Member

B42Woody

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I took Nibbler's lead and downloaded a Mason jar model from Thingiverse. If you have Solidworks, the Thingiverse download includes a Solidworks part file (and STEP, STL, OBJ). Having a native SW part, I scaled it to match my jars and added the lettering for a bit of pizzazz.  Finally, I generated a 4.5MB STL file and had it printed at my local makerspace.  The print cost was $10 (USD).

It threads on nicely and tightens up. I put some water in the jar to see if the lid would hold liquid.  It doesn't.  So, I'm going to modify the lid model to receive a silicone O-ring or (hopefully) a standard Mason jar gasket.

20210130_073922.jpg

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LittleWatchShop Distinguished Member

LittleWatchShop

Posted
Posted (edited)
On 8/9/2017 at 10:10 PM, measuretwice said:

thanks for the input.  The jars and lids are original,each with L&R molded in.  The jars are also molded with threads, however the lids are not threaded - they just sit there.  I've read L&R had thread-on lids but they seem somewhat rare.  It seems like it would have been a good thing the have, I mean who wouldn't want to seal it up when not in use?  (perhaps the L&R wash salesman?)  This model btw is the mastermatic.

I looked around the web for a screw on that might fit, no luck.  Cling wrap might work, but I know it would make me mental having t futz about with it.  I I'm going to try the heavy steel lid, and I have some neoprene rubber that would make a good gaskets.  If successful photo's to follow.

https://i.imgur.com/ISt2Uxq.jpg

 

https://i.imgur.com/XI0F07q.jpg

 

 

 

 

 

I see this is an ancient thread...deleting my comment

Edited by LittleWatchShop
stale thread response
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LittleWatchShop Distinguished Member

LittleWatchShop

Posted
Posted
On 12/1/2020 at 3:34 PM, Nibbler said:

The L&R cleaner and rinse I am using came in plastic jugs so I am expecting PLA printing material to holdup just fine. ABS could also be printed.

TPU also might be a candidate.  I have printed some lids with it (not for this application).  You need a printhead that can handle the flexible filament.

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LittleWatchShop Distinguished Member

LittleWatchShop

Posted
Posted
On 12/1/2020 at 3:34 PM, Nibbler said:

The L&R cleaner and rinse I am using came in plastic jugs so I am expecting PLA printing material to holdup just fine. ABS could also be printed.

TPU also might be a candidate.  I have printed some lids with it (not for this application).  You need a printhead that can handle the flexible filament.

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