Showing posts with label hand tools. Show all posts
Showing posts with label hand tools. Show all posts

Sunday, December 13, 2015

Bench build


Removing cup with the scrub plane
As with any woodworker the workbench is the center of activity and a good flat work bench is not essential but highly desirable. Much can be done with saw horses, 2x4s and other make do techniques but there is nothing more satisfying than having a nice slab top flat piece of wood on which to work.

The bench I used initially in my shed consisted of a steel frame with three 50x200x2000 slabs on top bolted to the frame with coach bolts. I mounted a 8" dawn vice on the front and drilled dog holes to clamp larger pieces. When I moved in to my current house all of the benches were inches high with rubbish, junk, tools and miscellaneous paraphernalia. After cleaning it off I discovered cupped, twisted and warped boards. This served as my bench for about three years before I became annoyed enough to want to do something better.

Small flattening jig
A few months ago I purchased a cache of hand tools including a Veritas quick release end vice for an excellent price. The problem is that it requires a flat bench with an apron, which I did not have. Time for some reconstructive surgery. The veritas quick release vice is more or less a mechanism that screws under the bench to which you can secure a slab of wood the same cross sectional area as your apron. You then drill dog holes in the top and side which gives you three methods of holding wood. First between the jaw and the apron. Thus you can hold long pieces such as stretchers for cutting tenons. Then using dogs along the top of the bench for planing for instance. Finally along the face using dogs to plane edges to to chop mortices.

Apron glue up
I began surfacing the slabs of the bench top by using a scrub plane to remove the bulk of the twist cup and warp. I made a small flattening jig to flatten each board. In the mean time I used some (what I think is) meranti timbers recovered from the house renovations jointed, glued and re-jointed for the apron and end vice jaw. I used the thicknesser to face the timbers for the apron which produced some nice clean glue surfaces. The timbers had some bow but gluing and clamping gave me a nice solid piece that I could then resurface for the apron. I used a scraper to remove the glue and then a random orbit sander to remove any residue left.


Apron jointed


I bought a jointer at this stage so I used that to true up the top face and edges of both the apron and bench timbers for a glue up. In the picture of the re-surfaced apron you can see the vice jaw glueup in the background. After the glue up I used a jig with a router fitted with a surfacing bit and a pair of jointed boards to surface the top of the bench so that it was dead flat. I will not go into the full technique since that is a topic all on its own and has been covered elsewhere by others including Mark Spagnolo, The Wood Whisperer. I then mounted the end vice to the under side of the bench and secured the sliding jaw to the vice.


End vice mounted under bench











Vice jaw


I glued the apron to the front face of the bench. I planed the apron flush with the bench top. I then drilled a series of dog holes along the top and side of the apron. Once the bench was complete I used a home made wax blend using 50/50 bees wax and boiled linseed oil with enough gum turpentine to produce a nice wipe on paste. This produced a nice finish on the bench.



Glueing the apron to the bench top










Plane the apron












Completed and finished bench




 At this stage my bench was flat and I had the end vice and apron fitted and it was sitting on the steel frame. The weight of the bench is sufficient to hold it in place. Being jarrah it is very heavy. The bench was serviceable but missing a front vice. To get around this hurdle I made a mini bench from jarrah to which I fitted my Dawn 8" wood vice to provide some clamping but this was not particularly convenient. 
Large quick release front vice
I bought a large quick release front vice online for $95 plus shipping. This is available from a number of suppliers in the quick release and standard versions. I preferred the quick release which was not available from my local supplier so I bought it online. There is no leaver for the quick release. It uses a split nut which closes when you screw the vice clockwise and releases when you twist the handle a quarter turn anticlockwise.






Front vice jaw
I began by marking out the position on the top of the bench where I was going to mount the vice. The position of the leg underneath determined how far from the end I was able to mount it.  This then set the jaw width. I wanted the jaw as high as the apron but I did not want to join the jaw and wanted to make it from a single piece.  However the piece of wood I was going to use was not quite wide enough but it was certainly wide enough for a substantial vice jaw. I cut a section from the rough board and jointed a face and one edge. I then faced the other side on the thicknesser and the final edge on the table saw. I cleaned up the saw marks with a hand plane. I finally cut each end on the sliding compound saw to final length. I wanted the jaw tapered either end so I marked out a taper on the ends of the jaw and cut to the line on the band saw. I then used a hand plane to clean up the bandsaw marks and to true the taper which was slightly off doe to the blade not being perfect. I need to get a new blade on the band saw since it does not cut perfectly straight.

Vice face
I found a nice piece of tight grained wood but quite soft to use as a vice face. I cut a piece slightly oversize jointed the faces and glued it to the vice jaw. I then planed it flush. This provides a nice clamping surface so as to not damage softer woods. Jarrah is very hard and can damage softer woods.

I wanted the vice screw to sit about half way up the jaw so I bade a spacer to fit underneath the bench to lower the vice mounting to achieve this. I flipped the bench and marked the position of the vice mount on the underside. I then checked that the bottom surface of the bench was square to the apron at this point since if it was out of square then the jaw would not sit flush against the apron which served as the inner jaw of the vice. The bench to apron was exactly 90 deg so I just took a few swipes of the hand plane to clean up the mating area. I marked the mounting hole position on the spacer I prepared and then marked four Xes on the spacer away from the vice mounting holes to drill for screws to mount the spacer to the bench. I drilled and countersunk pilot holes in the spacer and the bench. I glued the spacer in place and secured it with four 14G x 55 mm countersunk wood screws. The vice body has three 8 mm countersunk holes and 4 x 8mm plain holes. I drilled pilot holes for the three countersunk screws very slightly displaced towards the front. This meant that as the screws were tightened they would place a slight pressure into the back of the apron helping to keep it tight. I then secured the frame and used the holes in the vice to drill the holes through from the back of the apron for the screw and the two rails.

Underside of mounted vice
 I stopped as soon as the drill poked through then came in from the front to produce a nice clean hole. I then clamped the jaw to the front of the apron making sure that the top and end was flush with the apron then drilled through form the apron to the jaw. I then took the jaw to the table saw to dill nice square holes through the jaw. Again I came in from both sides to produce a nice clean hole.

I drilled and screwed the four 8mm coach screws, together with teh 8G x 75mm wood screws to secure the vice frame to the bench underside. I assembled the vice then tightened the vice with the jaw in position before drilling and screwing the jaw with three 12G x 75mm wood screws.

Vice handle blank
The vice does not come with a handle. It is designed to take either 3/4" standard galv water pipe which would be perfectly serviceable.  However it would be much nicer to use some dowling. 1" or 25mm would fit perfectly but I thought it would be nice to turn up a handle from some really hard wood I had. I cut a blank from some very nice clear piece of straight grained wood I had. The grain must be very straight and clear from any defects that may weaken the wood. I used a caliper to set the diameter and turned it on the lather. After sanding to 320 I used the same home made wax I used for the top to burnish the wood.

Finishing the handle

I need to make a trip to the hardware store to gt some 1" end caps for it.

I finally used the same beeswax, boiled linseed oil mixture to finish the vice jaw.

The vice operates smoothly and slides well back and forth. The jaw is nicely parallel to the apron and applies a lot of clamping pressure. I will finally drill three dog holes along the top of the vice then a series of dog holes in line with those three with spacing just slightly less than the vice opening.

Finished front vice
I am really pleased with the bench overall. It provides many clamping options which I will extend with some more judiciously placed dog holes in line with those I will drill for the front vice to provide even more versatility. It is flat solid and serviceable and will allow me to hone my woodworking skills as I produce some fine furniture. As a woodworker who loves the visceral feel of working with hand tools but enjoys the shortcuts of power tools I think that this bench is ideal. I can hold work for use with both hand tools and power tools.

Completed bench
Finally I would like to produce a set of sturdy wood legs for this bench rather than the steel frame on which is sits. The frame is certainly solid, no question, but I think a nice set of wood legs would be more elegant.





Wednesday, December 2, 2015

My Sharpening Regime

Much has been written over the years about sharpening hand tools and it seems that everybody has their preferred method but much of it seems to me to be trying to design a better mouse trap. A lot of fuss and effort to produce an exact same result as the old traditional method. Some of them are really expensive but do no more than the traditional sharpening method. For instance someone on Gumtree was selling his old sharpening station for $1,800 second hand which still required you to use a sharpening stone and/or strop after you had finished there. 

In this entry I will describe what I do to sharpen and why I use that method. Although I could spend many pages going through all of the various methods devised over the years most people would not bother to read it and this has been done so many times elsewhere.

The principle I adopt is simplicity coupled with tradition. The method I use has been used since time immemorial in both the western and eastern tradition in one form or another. It was the method my dad used and the method I was taught at school will little variation.

It is basically a two step method. A rotating stone for rough grinding to establish a bevel then stones to refine the edge. If you want a super sharp edge then stropping can provide a third step which is useful for knives or razors but I don't bother for hand tools. There may be a pre-first step of linishing for restoring old tools such as in the picture to the left but that is not part of an edge maintenance regime.

Step one is grinding the primary bevel. I do this on a grinding stone on a medium speed grinder. This is often mistakenly called a high speed grinder, it is not. An 8" high speed grinder uses resin wheels and spins at over 6,000 RPM. Your medium speed grinder is the most common type and runs at about 1800 RPM. The best grinder for this step is a slow speed wet grinder that runs at 600 - 800 RPM and runs in a bath of water. This keeps the steel cool and produces a much finer edge but is very expensive and can cost up to $1,000.

The grinder I use is an 8" medium speed grinder and uses a white aluminium oxide wheel. They can be had for $100 for a cheapish unit up to several hundred for a name brand. The white wheel runs cooler and creates a finer finish but does wear more quickly. I use a $20 diamond dresser to maintain a clean wheel and a slightly convex face on the wheel. The convex face will help prevent burning of the edge. I also keep a pot of water next to the grinder and dip the tool into the water after every pass. I set the tool rest angle by eye against the existing bevel, but if I need to reset the primary angle I can use a protractor. I then grind the bevel by hand resting the chisel on the toolrest and continually dipping it in water.

Step two is the actual sharpening. I was taught with oils stones sharpening freehand. Although with careful attention I can still sharpen freehand I find that I get more consistent and faster results using a jig. Since it is not my day job (if it was I would refine my free hand skills) I cheat and resort to a jig. I now use a double sided water stone, 1000/6000 grit. The oil is somewhat messy and requires more careful cleaning so as not to transfer the oil to the wood. If I was super keen I could get an 8000 or 10000 grit stone but I get acceptable results from 6000. This combo stone is about $86 from Carbatech which is pretty good value. Ceramic stones do not require soaking, you just need to spray them with water but they are much more expensive. I use a 400  grit diamond plate to keep the water stone flat. A few strokes after each sharpening is sufficient. I use a $40 stone holder which is quite convenient. I keep a spray bottle of water next to me to make sure the stone is kept moist, especially if I am sharpening a number of tools at the same time.

The jig I use is the Veritas Sharpening Jig Mk II which is $109. It comes with a gauge to set the angle accurately. I also added a camber roller for $38 which allows me to round the edges of smoothing plane blades.

I use a few strokes to establish the secondary bevel at 1000 then flip the stone and apply a few strokes to polish the bevel. If you apply a gentle pressure to the tool then you will not round over the edge. This is one of the biggest mistakes at this stage. Too much pressure may cause the bevel to distort and round over the edge and create a large burr which will produce a less than perfect edge. The burr must be extremely fine, almost impossible to detect. Once the edge is polished remove the tool from the jig and polish the back on the 6000 stone. Job done.

Using this method your ongoing costs are nil. After your initial outlay your grinding wheel, stones and diamond plate should last indefinitely. You do not need the more expensive Veritas jig, your side griping jigs which can be had for under $20 are just as effective if you are careful. You can set up a wood jig with depth stops for your common angles to make setting your bevel angles faster using the side griping jig. Although a wet grinder is better it is a lot more expensive compared to your regular medium speed grinder. The only thing I need now is a dedicated sharpening station. I really only need a small wet area with a laminex bench top set to a convenient height to allow me to lay out my water bath stone lapping plate and jig. If it is relatively close to your working area, but not close enough to get covered in shavings you will be into the semis without dropping a set.

My sharpening resources are;
  • 1000/6000 combination water stone
  • 400 diamond lapping plate
  • Sharpening jig
  • Stone holder
  • Water bath
  • 8" bench grinder with fine white stone
 Also when I get around to it a sharpening station.


Thursday, August 13, 2015

Veritas Scrub Plane

The scrub plane is not so much as a particular plan design so much as a method of preparing and using a regular bench plane. The purpose of a scrub plane is to easily remove a lot of stock to either thickness a board or to remove surface irregularities such as cupping or twist.

A scrub plane is identified by the severe radius on the blade, typically about 75mm. This allows the plane to rapidly remove a lot of wood very fast. In the past timber framers would use a scrub plane to size timbers for sockets or joints. Also cabinet makes would use a scrub plane to size timers before finishing them with the jointer and smoother. Any bench plane (except perhaps a jointer) could be made into a scrub plane by simply shaping the blade with a sharp radius. In fact many hand tool woodworkers keep separate blades for a bench plane with a severe radius to use as a scrub.

Since the scrub is pretty much "brute force and ignorance" it does not need any of the refinements and sophistication of your regular bench plane so Veritas has produced a bare bones plane that has a very simple body a single securing screw and an iron radiused at 75mm. They call this the Veritas Scrub Plane.

The body is about the same length as a jack so it is ideal for flattening boards as well as thicknessing. My old bench consists of three planks of 50x200x2000 jarrah and the centre plank has about a 2-3mm cup. I used my new Veritas Scrub Plane to flatten out this cup before smoothing it in preparation for jointing the edges for a glue up.

The scrub plane was a dream to use and made very short work of the section in the photo to the right.

I had a chance to pick up this plane second hand for the price of a quality plane iron which saves having to reset the plane every time I want to use a scrub plane.

The Veritas scrub plane is simple easy to use and is an excellent addition to the hand tool workers kit.

Wednesday, August 5, 2015

Jarrah Modem Shelf

My ADSL modem was sitting on a music stand in the laundry And looking rather untidy with cables going every which way. A friend gave me the idea of making a custom shelf for it.

I have a load of jarrah paneling which was recovered from the Port Adelaide wool sheds in the 80s.

I took a piece of this, about 100 wide and 1200 long and cut it in three and jointed four edges. I then glued the two pieces together to make a piece that was about 250x400. I wanted the shelf to be about 200x300 wide. After resurfacing the faces on the thicknesser I cut out the piece to length and then cut it length wise which  gave me one piece for the top then another which I could glue to the bottom of the back edge which I could use to secure the shelf to the wall.

I wanted a cut out at the back to take the cables so I made a template which would make about a 25x50 mm  cut out on both pieces. This would allow all the cabes to be routed via the back of the shelf to keep it tidy. I had to buy a 40mm x 12 mm patten bit since my patten bit was not long enough. I secured the patten to the pieces using double sided tape and then routed out the recess.

I then routed a 12mm round over on all of the edges except for the front top of the rear piece and rear edges of the front piece where they joined and the back of the rear piece which sat against the wall. I then glued the rear piece to the bottom back of the top at right angles. Once the glue dried I Used a couple of pocket hole screws to reinforce the joint.

After scraping off the excess glue I used a small block plane to clean up any slight overlap of the joint.

I finally sanded to 320 grit using a random orbital sander and applied 2 coats of a home made wiping oil varnish mix. This left a film of oil after it dried so I wiped that off using a clean cotton rag and then applied a finishing wax which I buffed in by hand using a cotton rag.

I mounted it to the gyprock with  some wall board fasteners. I did not bother locating it to the studs since the modem is just a few hundred grams.

The wood ended up with a nice deep red look with a natural finish. It is not subject to rough treatment so I thought that this was sufficient.

The finishing touch was some flexible cable ducting to keep it looking tidy.

It still has the marks of the various uses that the wood has had over the years which speaks of the history of the wood. I took no pains to disguise that since it does not detract from its purpose and adds character to the whole project.

I have more ideas for how to reuse the wood I have recovered as well as other unused pieces that the original owner and builder (now sadly passed) has left behind. All of the projects will have a similar character and I may even make a mounted plaque telling the story, just an idea at the moment.

My next project using this wood is a little more ambitious and will be a bathroom cabinet with glass doors.




Thursday, April 16, 2015

Veritas Minature Router Plane

I bought this plane to route a shallow (0.5mm) mortice for a label. I have only had it a day and used it on a test cut.

The plane is made from Stainless steel with bubinga knobs and A2 hardened steel blade. However the ferrule is aluminium which could be a concern considering the stability of the blade. The presentation box is a nice touch and should protect it (and prevent it from being lost in a junk drawer!)

It feels nice in the hand but I do not have overly large hands, I could imagine that if you have beefy hands it might be an issue. In use it is easy and convenient for those small jobs where space is an issue or more delicate jobs where a full sized router plane is too large.

The only issue I have is the stability of the blade. The blade needs a bit of fiddling to get it locked and stable. Every time I tightened it the blade worked its way loose. I found that I have to continuously move the blade slightly whilst locking it in with the securing screw to ensure that the blade was secured properly. I found this somewhat annoying and this made it difficult to adjust the depth accurately. This has the potential over time to wear the thread inside the aluminium ferrule. I am hoping that over time as the edges of the adjustments smooth over or I become more used to the securing mechanism it will be more reliable to secure the blade.

I paid AU$65 at my local woodworkers store which is rather expensive. Apart from the blade securing issue - which makes it feel lower quality than it really is - it is a very nice tool.

It is an extremely useful tool for doing those small jobs in tight corners.