Tag Archives | workshop

Milling Machine Bench and Workshop Update

I’ve recently acquired a couple of significant additions to my workshop so I thought it was about time I did a workshop update post.

These two new additions are one Sieg SC4 metal lathe and one Sieg SX3 milling machine. The latter of these two weighs 165Kg (363lb). I didn’t like the idea of having to move this machine more than once so I thought it was appropriate to build a sturdy bench on castors which I could put the machine straight onto upon receipt.

The SX3 Mill is also sold is a Grizzly G0619

I got these machines through Sieg Machines New Zealand. They stock and source a wide range of machines and accessories. Chris the owner has been very helpful. Check them out at www.sieg-machines.co.nz

 

As with most of my projects, the bench ended up being needlessly over engineered! I conclude that I have Inceptionitus. I.e. Once an idea has taken hold of the brain it’s almost impossible to eradicate’.

In this case the idea stemmed from the thought that eventually I would convert this milling machine to CNC therefore I’d want a way to contain swarf and cooling fluid. Initially I considered forming a tray using some kind of rubber lining like butyl rubber membrane, but I was concerned about chemical resistance.  Then it occurred to me that a moulded fibreglass tray would be a ‘simple’ solution to the problem. And that was it, the idea had taken hold. Of course it’s much easier to conceive an idea than to complete a project! Let’s begin…

 

First step – Get the dimensions of the machine and create designs in Sketch-up.

TrayMold

Mould design for the fibreglass tray (Inverse of the final product)

 

 

BenchDesign

Overall bench design

 

I decided to make the fibreglass tray first so that I could adjust the bench design to accommodate for any inaccuracies in the fibreglass which once set can’t be adjusted.

 

The mould was made from:

  • 9mm melamine board
  • Scraps of cupboard door chipboard laminate
  • 20×45 Pine cavity batten
  • Plasticine
  • Duct tape
  • Polyester builders/auto filler
  • 6mm MDF

 

MouldMaking2

MouldMaking3 MouldMaking7MouldMaking5  MouldMaking10

 

This was a stupid way to make the drain hole. If I did it again I’d use the top section of a soft drink bottle or similar.

DrainMaking DrainSand

DrainDone

 

I did a few test pieces of fibreglass to get a feel for the gelcoat which I hadn’t used before. And to work out the best tape to use. I found that the resin sticks least to the duct tape. Masking and packaging tape were also fine but the heat from the curing process made them wrinkle.

GelcoatTests

 

Plasticine is used in the corners to give a radius. Fibreglass doesn’t like bending at 90 degrees.

MouldPast

 

I put tape over the plasticine on the long stretches because it gives a nicer finish than the plasticine.

MouldDone

 

Two coats of gelcoat brushed on with a a couple of hours between coats and left to cure for a few hours.

GelcoatDone

 

After the gelcoat I laid down a single thin layer of fibreglass re-enforcing with polyester resin and allowed it to fully cure and then sanded it. Doing this (as opposed to adding multiple layers straight away) significantly reduces the chance of getting air bubbles between the gelcoat and the fibreglass.

After this three more layers of resin and chopped-strand-mat reinforcing was added. I ended up with a few air pockets in these layers but nothing too major. Perhaps I should have let each layer to set up at least a little before adding the next.

FibreglassDone

 

Edges cut flush with a diamond blade on the angle grinder then smoothed off with a normal disc.

MouldGrind

 

I naively thought I would be able to remove it from the mould without disassembly. Yeah right!

MouldDissasembly

 

TrayDone

As expected there are lots of moulding artefacts but overall I’m very happy with it. Especially considering it was a fairly rushed job over one weekend and a few week nights.

MouldingArtifacts

 

Now on to the bench itself…

The bench design is based on the same torsion box design as my main workshop bench.  Pretty overkill but I still had a lot of plywood offcuts from the workshop restoration that I needed to use up.  There are castors on each of the four corners rated at 280Kg each. The centre foot jacks down with three 16mm bolts.

Bench1

Bench2

 

Bench2-1

 

I was able to recycle wood from the fibreglass mould to make the fixing blocks for the bench top.

Bench3

Bench3-1

Bench4

 

I used auto filler on the rough edge of the tri-board to give it a smooth seald finish.

Bench5

 

And now for the best part…the install.

Finals3

 

Finals4

Finals1

 

Finals5

On the left: Sieg SX3 milling machine. On the right: Sieg SC4 lathe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thanks

Special thanks to my wonderful wife who painted the bench, to Simon for the help and use of the engine crane. And to Andy for the offer of the engine crane. To Chris at www.sieg-machines.co.nz for all the help. And to Adam who transported the machine.

And a plug for my favourite local businesses:

NZ Fibreglass, always with helpful advice and Hill Lumber who have the best lumber prices around

 

Conclusion

Things I’d do differently:

  • Contouring the tray and drainage area to make sweeping swarf away easier
  • Take more care on the mould to reduce the moulding artefacts
  • I’d consider making a reusable fibreglass mould so I could make more trays and sell them – although I suspect the market in NZ is fairly small
  • I probably wouldn’t bother with the jack’able middle leg and just use casters instead. The cost of the large bolts wasn’t much cheaper than the casters in the end. Arguably it provides more strength to the structure right under the machine. Arguably the middle leg is overkill and not needed at all!

Thanks for stopping by, hopefully this gives you some ideas if you’re thinking of doing something similar.

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Workshop and Workbench Update

Back in January I posted about my workshop renovation. Since then I’ve completed the network outlets, wired up the security alarm and built a workbench.

Initial workbench concept done in Sketchup.

Each leg is a 2×4 and ply torsion box. Well I had to do something with all the ply offcuts from lining the walls!

The ply is screwed and glued to the 2×4 box. These Irwin QuickGrip clamps are super handy.

Yes the bench is built like the proverbial brick house. Several people have made reference to an earthquake or bomb shelter.

I installed a tub with removable insert to save bench space. (Good call Niten!) Not sure when I’ll  to get this plumbed in.

 

3mm steel galv plate for the metalworking area.

I wanted the plate to sit flush with the surface of the bench so I routed out 3mm across the surface where the plate goes. 25mm per pass. Sucker for punishment? Perhaps. Actually the top was ok – the front – don’t ask. This was done with a Makita RP1800 Router. ‘Like a hot knife through butter’.

I then glued the steel plate in with Contact Adhesive

This is an original ‘Made in England’ Record vice which I did a quick restoration job on. Very robust.

These record vices are now sold under the Irwin brand.

My favourite part…What would a workshop be without a server……tool drawer.

I’d like to add a few more but who knows when I’ll get around to it. I used a Bosch Multi tool to cut out the little recesses where the rails are mounted. Can highly recommend these.

And yes you can cut through a CD ROM drive with a Jig Saw

It’s already getting messy!

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1 Year Workshop Renovation

…And I’m back. Yep, it’s been a while since I shared anything much here. That’s partly because I’ve been spending so much of my free time converting my decrepit old garage into a tidy workshop, a project that I started just over a year ago.

It’s been one of those of projects that starts out as a small seed of an idea, something that will take just a few weeks but then grows one “If I’m going to this I might as well do that” statement at a time until it carries on for an entire year.  In project terms it’s clear that I failed to define the requirements and scope up front!

 

In case you don’t make through to the end this very long set of photos I’d like to say a big thanks at the beginning of the post to:

  • My wonderful wife who has not only put up with me spending so much time on this project over the last year has also done ALL the painting that you’ll see below
  • My good friend Rick who helped me through all the electrical work and made sure that I didn’t burn the workshop, the house or myself to the ground
  • My good friend Simon who helped with external weather proofing.
  • The guys up at Hill Lumber in East Tamaki for their advice and patience for a total newbie who couldn’t even tie down a trailer on my first of many visits. If you’re looking for great timber and building materials at the best prices around check them out.

The old garage which is 3.6m x 7.2m was built at the same time as the house in 1956. It has a side entrance and main entrance, which opens out into the carport, which opens out onto the driveway. Having the carport for the car meant that I could convert the old garage into a workshop for anything from woodwork to metalwork, plastics, electronics etc.

 

Inside, looking out through the carport. Before starting the project.

 

The old workbench

 

My initial intention was just to replace the rotten framing and line the interior with ply. Water had been running under the door when it rained heavily and would flow to one side. Consequently, the bottom plate and the first ~150mm of the most of the studs down one side had pretty bad rot. Water had been coming in the top and around the sides of the window on the back wall resulting in yet more rot. The right-hand side (which has the side door on it) was pretty solid.

 

 

 

The first step was to clear out the bottom plate.  I used a couple of the redwood planks for the old workbench to prop up the wall under the top plate. Most of the bottom plate cleared out easily because it was so rotten. I used the angle grinder to cut off the old steel anchor pins.

 

 

 

Old bottom plate all cleared out

 

The next step was to put in the new bottom plate using dynabolts and with a strip of damp-proof course to prevent moisture in the concrete slab from being absorbed into the wood.

 

 

 

With the new bottom plate it was time to sister the rotten studs with new ones.

This all went well and I worked my way along the left hand wall until I reached the first window, at which point I stood back and admired my handy work and for my first ‘building’ project I was pretty happy. It all looked solid and reasonably straight and I thought since I’d come this far I really should replace the old rusty louvre window. I picked up a second hand aluminum window off TradeMe.

Next I moved on to the back wall and back window. This time I had to:

  • Take care of the partially rotten top plate by re-enforcing with a sub-top plate
  • Install new studs and remove the old window and rotten diagonal framing
  • Install a new window frame and window – again I managed to find a second hand aluminum window that was about the right size.

I came across this excellent site which describes how to correctly frame a rough opening for a window.

At this stage I had dealt with all the rotten framing and had a generally sound building. I figured since I’d come this far I should really doing something about the very pitted rough stained floor. In the end I settled on getting a guy in to grind, patch and lay two coats of epxoy. Oh and while I’m at it I might as well install a secondhand roller door.

I was averagely happy with the floor. There are a lot of grind marks and there were a few other issues but I won’t go into that.  It’s about 1000% percent better than it was. Finally it was time to start lining. Or was it? As I surveyed the project so far I figured it only made sense to line the ceiling as well as the walls, and if I was going to line the ceiling it would be a shame to miss the opportunity to install insulation.

Of course before I could start any of the lining I had to consider wiring – power points, lighting etc. With a whole new set of electricals I should really install a new main cable back to the house to replace the 50+ year-old one that was there. That task lead me to cut a trench across the path between the workshop and the house. And let’s face it, while you’ve got a trench open you’d be silly not to lay network cables back to the patch panel in the house along with a pipe for water supply. Right?

 

 

Did I go overboard on the Ethernet?

 

 

 

I had to add additional framing to support the ceiling panels

 

696 Watts of fluorescent lighting. Switched in 3 sets of 2.

And finally on to the wall lining and switchboard.

All that’s really left is the workbench and I’ll put that up in another post (hopefully) soon!

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