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PM 3520C assembly advice

Joined
Jan 29, 2022
Messages
68
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46
Location
Woodinville, WA
Having waited too long for a fantastic deal on a surplus PM 3520C ($3600 new!) I bit the bullet and bought one from Woodturners Catalog, because I'm not getting any younger. Also a very good deal.

My "problem" (first world problem really) is that I imagine it will come unassembled on a pallet. It's just me here and I'm not Arnold Schwarzenegger in his prime. The lathe parts are heavy. Any advice on putting this beast together? I'm thinking that an engine hoist would work for assembling the base, then hoisting the headstock onto it. Maybe there's an easier way.

Also, I'm considering putting casters on it. Is this a bad idea?
 
Permanently attached casters raise the spindle height, duh. I don't like turning with the spindle above my elbow height. I have done it and can confirm, from experience, that I don't like it. Your preferences are your business.

I have also heard that a hydraulic lift table can be helpful with assembly. probably more with legs to ways than with headstock on to ways.

Congratulations on your new lathe and good luck.
 
@John Snow
Hey, I've put together (and taken apart and moved) several largish lathes by myself. Arnold was busy that day. One lathe is my PM3520b, perhaps similar in weight to the one you have coming.

I hauled it to my shop in a covered trailer. I was able to back up to a double-door; no steps.
I pulled out the bed enough to position one end on a furniture dolly (the type with four casters and wood pieces covered with carpet), rolled and slid the rest of the bed, then lowered it to a second furniture dolly. Rolled it into the shop. The legs were light enough for me to carry.

To assemble, I positioned one leg close to one end and used an automotive floor jack to lift one end of the bed. Can remember if I needed to use wooden spacer blocks.

When at a suitable height, I tilted the leg to line the bolt holes with the bed then inserted and lightly tightened the screws on that end.

I then lifted the other end with the floor jack and positioned the 2nd leg and fastened with screws, tightened all screws, then was able to scoot the lathe bed+legs across the concrete to the position where it's been for years. I positioned and mounted the bed extension (if you have one, a little hint, insert a piece of wood - 2x4 or something that will fit) into the end of the lathe bed and lift the extension and slide it onto the wood to hold it in approx position, insert, align, and tighten screws.)

I rolled the headstock to the end of the lathe on one of the furniture dollys. I was able to lift and align the headstock by myself but it would have been a lot smarter to enlist help from a second person. The banjo and tailstock were easy.

I moved and assembled two other lathes the same way. One was into an earlier shop with exposed roof structure - for that I rigged a rope to help raise and hold one end of the bed. It was a Jet 1642 with all parts a lot lighter than the PM. Moved another Jet 1642 and assembled it without using anything but a length of 2x4 cut to a useful length - lifted one end of the bed and propped it up with the 2x4 (it was stable enough), mounted the legs one at a time. Later, disassembled it the same way and load it on a trailer myself to give it to a friend. If it was the PM I'd have gotten help as I did when moving a 2nd jet out - at 75 I have to make myself set aside pride and ask for help!

Several lathes are helpful for lessons!
1764699916469.jpeg

In case Arnold is busy when you get the lathe, if you are in a woodturning club I'm sure a turner (or two) would volunteer to come and help. Woodturners are great people!

Don't know about your shop layout, but two friends mounted I-beams in their shop so they could use a simple chain hoist to lift heavy things. One uses it for heavy wood and equipment, the other for engine work.

I would hesitate to put and leave casters on a lathe. Some I know who mount casters on a club lathe (to regularly move it from storage every month demos) have rigged up clever schemes to lower and lock the casters into place, move the lathe, then release and raise the casters so the lathe sets firmly on the floor on the four threaded levelers/adjusters. Any mechanically-cognizant person could design such a mechanism - those I've seen were made of hardwood with some steel hardware pivots and such. I find the stock lathe adjusters very important, especially for small, detailed, and critical work, since the slightest irregularity in a floor can put one adjuster a bit out of the plane and cause a misalignment between the headstock spindle and the tailstock live center. (It may seem unlikely, but even a heavy cast iron lathe bed can easily twist.) I check this alignment every time I move a lathe, even if moved a little on what appears to be a perfectly flat concrete floor. I've mentioned this before: at a demo by turner Mark StLeger he noticed a slight misalignment in our club lathe and said he would have problems with the next step after the break. During the break, I adjusted the alignment - tool only a minute.

JKJ
 
I have also heard that a hydraulic lift table can be helpful with assembly. probably more with legs to ways than with headstock on to ways.
Yes. If you have room for it to live in the shop, a lift table is great. Got mine at the old Harbor Fright.
You can raise/lower the bed to get the height just right to assemble the legs.
You can move a lathe by lifting under the middle of the bed (might eliminate the need for casters).
I also use mine to lift logs and larger blanks up to get them on my chainsaw table and up to the bandsaw.
And an extra table is never a bad thing.

I've moved a PM3520b and my Jet 1642 a few times (removing the legs to make it more manageable. My experience and situation is different than yours, but hopefully maybe something here will help:

Each major piece (legs, bed, headstock) is heavy. Get the bed up at leg-height somehow (lift table, hoist, pickup bed, sawhorses, etc) and bolt on the legs one at a time. I've also heard of some people putting the legs on with the latch upside-down and rolling it over?. If you have a lift table or hoist you can probably leave the headstock on the bed - just side it back-and-forth to distribute the weight. (i.e. once you get one leg on, put the headstock over that leg and the other end will be easier to mess with)
The worst piece to deal with as I remember is the headstock. Not only is it heavy, but it is awkward - no handles, nowhere to grab effectively. Put a faceplate on the spindle and lock the spindle - that at least gets you one hand-hold.

I have attached something like a 8" disc to the faceplate, and put the headstock on the lift table sitting on the faceplate (so the motor is sticking up). Got the lift table situated at the end of the bed, and tipped it over onto the bed. That seemed to work fairly well.
 
I watched a couple of U tubes videos on unpacking and setting it up. For me, the hadest part might have been getting the headstock up onto the lathe bed. But as someone mentioned above a hydraulic lift table makes this a lot easier. You bolt the legs onto the lathe bed while it's upside down (at least I did) and tip it up. I found I couldn't tip it upright. It's either 1:) a job for a stronger (younger) person or helper, or 2:) using some deice like an engine lift. I resorted to using my compact tractor loader and load sling. Once i got it located in the shop, I used the hydraulic lift table to move it around. I'm not all that tall so my lathe doesn't those risers on it, and casters would have made it higher....it's just right (for me) with out that stuff
 
You've gotten good advice here, but there are also some similar threads available by searching. If you're reasonably mechanical, you can figure out how to manage everything by yourself, except the headstock.

One other solution to the headstock is an overhead hoist to lift it up. After the lathe is all together, you can use the hoist to get heavy blanks on the lathe, as well.
 
The 3520 lathes have a 5/8" bore all the way through the headstock. Get a three or four foot length of 5/8" cold-rolled steel to go through it and a couple of fit people can lift and carry it pretty easily to put in place.
You can use 36" rebar from the big box stores. Just rap it with tape to protect the inside of your spindle's morris taper.

By the way, all the Allen bolts are Metric.
 
...headstock. Not only is it heavy, but it is awkward - no handles, nowhere to grab effectively. Put a faceplate on the spindle and lock the spindle - that at least gets you one hand-hold.

That gave me an idea. Make a nice, sturdy handle on a board.
Fasten the board to the faceplate. (so the handle is at the top when the spindle is locked, of course!)

JKJ
 
That gave me an idea. Make a nice, sturdy handle on a board.
Fasten the board to the faceplate. (so the handle is at the top when the spindle is locked, of course!)

JKJ
Now THIS is some top notch advise...wish I'd thought of this one.

But you've also touched on the other advice I was going to suggest. Get a 12 pack of some premium beer, order two large pizzas and invite some neighbors and/or friends over for some quick help.
 
Now THIS is some top notch advise...wish I'd thought of this one.

But you've also touched on the other advice I was going to suggest. Get a 12 pack of some premium beer, order two large pizzas and invite some neighbors and/or friends over for some quick help.
John’s idea is a great one. If you can’t find enough people, you can rent an engine hoist for a day for a few dollars.

My bud has one and I unloaded a lathe off a pickup truck bed by myself. Lifted and then drove the truck out from under it. While suspended, attached the legs. Was also helpful when adjusting the leg height.
 
I bought the PM lathe a few years ago and didn’t even try to unload and assemble myself. Some parts are just too heavy and my shop is in the basement. I hired College Hunks (a moving and junk removal company). It cost me about $200 a few years ago (a basic minimum charge) but the whole thing was down in my shop and setup in about 45 minutes ready to use. Maybe I would have done it myself with a couple of friends many years ago but in my 70s no way. You may not have a College Hunks in your area but I bet there are other moving/hauling companies that would do the heavy lifting and move the parts into place while you assemble. The bed needs to be in place upside down to install the legs and risers if needed but that’s a 15 minute job. Then tip the bed/legs upright and get it set and leveled if possible. From there it’s just getting the headstock/motor slid onto the bed and the tail stock. It’s just easier than doing it yourself. Plus if you bought the lathe for $3600 the $200 or so for the moving company is well worth. (Not sure where you got one new for $3600 but lucky you. I only see it for $4700 right now. )
 
I set my 3520A up all by myself, but that was over 20 years ago..... Ain't that strong any more. One thing I never thought of was putting the legs on the bed with the bed up side down, then rolling it over. Other than that, have some friends come over to help. The headstock is very awkward to handle, and a big exclamation point on that!!!!!

robo hippy
 
Boy Scouts and church youth groups are always looking to raise money. A couple of older boys might be the ticket.

Also watch un-crating a Robust lathe for some ideas.
 
I bought the PM lathe a few years ago and didn’t even try to unload and assemble myself. Some parts are just too heavy and my shop is in the basement. I hired College Hunks (a moving and junk removal company). It cost me about $200 a few years ago (a basic minimum charge) but the whole thing was down in my shop and setup in about 45 minutes ready to use. Maybe I would have done it myself with a couple of friends many years ago but in my 70s no way. You may not have a College Hunks in your area but I bet there are other moving/hauling companies that would do the heavy lifting and move the parts into place while you assemble. The bed needs to be in place upside down to install the legs and risers if needed but that’s a 15 minute job. Then tip the bed/legs upright and get it set and leveled if possible. From there it’s just getting the headstock/motor slid onto the bed and the tail stock. It’s just easier than doing it yourself. Plus if you bought the lathe for $3600 the $200 or so for the moving company is well worth. (Not sure where you got one new for $3600 but lucky you. I only see it for $4700 right now. )

Thanks for the advice. And if I made a typo, the surplus lathe that I waited too long to buy was $3600. The lathe I bought was $4700, free delivery. Still a good deal.
 
I put my 3520b together by myself but that was over 20 years ago. The hardest part was the headstock, got it done just barely.
My experience exactly with my C. I found all pieces manageable using leverage and cribbing, but the headstock was just stupid. A couple of the previous suggestions including a rod through the spindle, or handles mounted on faceplates, in hindsight, are perfect solutions. My experience was five years ago, as I’ve just gone out of warranty, but I’m still loving the machine.
 
As Randy Heinemann said, Hiring professional movers is an option, particularly if there are stairs.

Also, I have heard that attaching hoists to floor joists or roof rafters is risky, as these structures are not designed for that kind of load. Something I've heard, but I don't know more.
 
I recently bought the big Harvey T60 lathe and their G700 dust collector. I hired strong backs from a local moving company and bought a lift table from Harbor freight.

I had planned on having to assemble myself - but the moving guys assembled after moving it into my basement. They all got a nice tip for that. The headstock is ridiculously heavy and I was grateful for not having to lift that myself. The added benefit of the lift table is along with lifting the ways to the right height for leg assembly it has subsequently allowed me to move the lathe around the shop. No mobility kit required.
 
Before this goes any further, where is it currently sitting? Where will it end up? Are there accessible joist where you could bolt a lift on? Are stairs involved? Etc…

You will get the best suggestions for self assembly with more info.

Beer and pizza influenced recruitment of help needs no more explanation.
 
+1 for the Harbor Freight hydraulic table (I used the 1000 lb version). I used it to put my lathe together alone and now I keep it in my shop right behind me while turning. I use it to hold my tools/sandpaper bins while turning as well as for sealing and finishing after turning. I also use it to hoist large heavy blanks (20-23") onto my lathe. It is easy to raise/lower and overall I find it extremely versatile and useful. My shop is tiny but since I am always alone, I don't think I could get by without this.

Here are some pictures of it in my shop right after sealing some wet wood, while sealing fresh rough-turned blanks, and a recent 23" x 14" blank that I used it to get it onto my spindle.

Shop cart.PNGroughed blanks.jpglarge blank.jpg

Good luck!!
Tom
 
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