Chip's 42 in Minnesota

[mrchipster]

Re: Chip's 42 in Minnesota

Hand lotion!!!?

Ya Sure ... You Bet Ya!!!

I have mortared up to chain 9 and have not worn gloves and my hands a baby soft. and my nails are not cracking. You should try it. Best kept secret for concrete work passed along from a friend of mine named Erik (Frenchie).

Chip

[brickie in oz]

Re: Chip's 42 in Minnesota

Hand lotion!!!?

[Tman1]

Re: Chip's 42 in Minnesota

It's coming along...

[mrchipster]

Re: Chip's 42 in Minnesota

Hint of the day.

When applying mortar to bricks and when tapping them into place have your mortar container (in my case SS bowl) directly under the work area, That way mortar that squeezes out or is dropped will fall right back into the bowl.

Chip

[mrchipster]

Re: Chip's 42 in Minnesota

Today's progress

Up to chain 7 with inner arch bricks in place. _Still need a little clean up of a couple of the Arch bricks with the grinder - When they were mortared in they did not fit exactly as planned and need some trimming but I need to have the mortar firm up a bit befor hitting them with the grinder.

I pre-cut the Inner arch bricks into a wedge shape and then custom cut each brick as I went until I reached chain 7 and then closed in the inner arch.

[mrchipster]

Re: Chip's 42 in Minnesota

I have been out of town and did not make any progress for several days -- but progress was made last night and today.

First I would like to address the hand tools I use to work on the oven - Photo attached

1) Rubber coated gloves. - These are used to handle bricks when moving them, cutting them and mortaring them into place. They are very rough and the glove keep your skin in place.

2) Marking pens and pencils - Permanent marker - I lake the large sharpie it holds up for about 1 day of marking bricks and leaves a nice line on the brick that does not wash off from the wet saw spray. Cons - not real accurate.

Pencils - for precision marking and taking notes. if you use on brick it will need sharpened often but it will wash off so no permanent marks to worry about.

3) 8oz measuring cup. and not shown a 24 oz plastic yogurt container. Used to provide a precise measure of dry mortar and water so my mix is always consistent. - Also not shown - I put a 1/2 gallon plastic milk jug in the freezer 1/2 full of water. that way I can add water if it is fully frozen or pour very cold water for mixing with mortar. Mortar will stay usable longer if mixed with cold water.

4) Stainless mixing bowl - 2 of these one for cleaning and one for mixing small batches of mortar. why stainless - it does not break and is very easy to clean

5) Small drywall knife - nice for cleaning up and pushing around mortar.

6) Hand Lotion - Put on before during and after working with mortar. it will save your hands.

7) Silicone Spatula - I prefer this over a masons trowel for these small bricks and odd angles.

8) Angle tool - Measures angle of bricks and shims I use to angle bricks on the brick saw.

9) Bullet level - Checks for level on short distances.

10) 36" level - Level of longer distances - I also have a 6 ft level that I use.

11) Rubber Hammer - Perfect for nudging the bricks into place and squeezing out the mortar. many light taps are better than a few hard smacks. Also pushing on the brick while tapping works very well.

12) 3M scrub pad - makes short work of partialy set mortar

13) Sponge - I prefer a grout sponge with rounded edges but you may have other preferences.

14) Towel - used to dampen bricks - clean up floor of oven and wipe down bricks etc...

15) String attached to magnet - Used to measure from center of oven to inner and outer sides of bricks also checks angle for brick cuts. Hint- mark the string with permanent marker at inner and outer walls of oven for quick check of dimensions.

16) Indispensable tools with brick holders. - Using the ball bearing center and magnets for positioning More than one tool can be use at a time. Set one brick, set the second brick on the opposite side of the oven and by the time you are done setting the second brick the first tool is ready to be removed.

17) Measuring tool with magnet ends - This tool is set to the internal radius of the oven and is used to check and mark positions and locations. It can also be used to hold a brick in place so it does not slip into the oven. With magnets on both ends it can be used to hold metal objects like knife blades and mechanical pencils, etc...

18) Plastic door and window shims (not shown) - I also use plastic door and window shims on the wet saw to position the bricks for cutting. Home Depot sells packs for a couple of bucks.

[ggoose]

Re: Chip's 42 in Minnesota

Chip,

I had the same leftover mortar problem; I just smeared it on the outside of the dome for additional thermal mass...

Your arch is looking good

gene

[mrchipster]

Re: Chip's 42 in Minnesota

Today was slow but I learned a few things ? building the inner arch might not be as easy as it looks. And there are some easy lessons to be learned.

As you will see from some of the photos that I took. I learned that transferring the top of the previous brick geometry to the next brick above was easy to do once the lower brick was cut. That way it was easy to set up for the cuts for the upper brick. Using my indispensable tool, I was able to then determine the cuts for the upper brick on its topside. The photos will show, the markings made to the lower and upper bricks and the shapes translated.

I am now at chain five, and will begin making my inverted V cuts on the next level.

The chain five bricks are almost identical to the chain four bricks. and I had a few extras from chain four, so I cut chain five identical to chain four.

The transition bricks to the inner arch are quite easy to cut because of the techniques being used.

I finished my first bag of FB mortar today. I have been mixing it in batches of approximately 24 ounces volume measure. And I am able to lay somewhere between six and nine bricks with that amount of mortar. I always seem to throw away or waste a little bit of mortar by either dropping it, having a dry out, or there's just not enough left to place another brick.

[mrchipster]

Re: Chip's 42 in Minnesota

Now that's a beast! Bet she sounds good too!

Nice smooth powerful dual belt drive wonder - it just hums and does not slow for anything I toss at it.

I keep my hands in safe positions because I know it would not care if it was cutting brick, stone flesh or bone.

Chip

[GianniFocaccia]

Re: Chip's 42 in Minnesota

She is a big old Norton Clipper that takes every electron out of a 20 amp circuit

Now that's a beast! Bet she sounds good too!

[mrchipster]

Re: Chip's 42 in Minnesota

I realized I have not posted a photo of my saw so here you are.

She is a big old Norton Clipper that takes every electron out of a 20 amp circuit.

Chip

[mrchipster]

Re: Chip's 42 in Minnesota

I made additional progress today. I started to join my chains into my arch.

I am following the guidance of Ocotforno - GianniFocaccia

I like the idea of being able to have an Isolated dome and arch and I believe his method of incorporating the inner arch into the dome is the best I have seen. There are other examples of this style but his seems to be the best documented version.

I am building the chains and arch as I go so the inner arch will not be completed until I reach a chain in the 8 - 10 range. I am using recycled fireplace bricks so I have a little smaller size than others have used They are 8.375 X 3.75 X 2.25.

I cut full bricks lengthwise removing a 4 degree taper from each side as the basis of my internal arch. They are then cut into the desired shape as needed for each new chain. The indispensable tool is very handy for doing the internal cuts.

I really like the ball bearing and magnet indespensable tool setup I have. I have now made up 2 brick holding tools both the same size. One tool that is a positioning stick that is just cut to fit the 21 inch radius, and a magnet with a string attached to mark angles from the center,

All the tools have come in handy so far.

I did modify the brick holding tools today and removed some of the width and most of the bottom edge from the angle plate, I find it easier to clean up excess mortar with a smaller brick holding tool.

The real benefit comes from being able to set two bricks at a time. I will be working on chain 5 tomorrow and I still have a little FB mortar in the first bag. I think I may only use 2.5 bags for the entire project ( we will see ).

That is all for today

Chip

[Tman1]

Re: Chip's 42 in Minnesota

Yesterday was better, but still too hot for me. I don't remember hating the humidity so much when I was younger. If you need wood or scrap plywood for something, let me know.... I'm sure I'd have something you could have. There i a granite place out by me that might have some scrap pieces for cheap if you're flexible on color.
Looking good.

[mrchipster]

Re: Chip's 42 in Minnesota

More progress today.

Used My Indispensable tool for the first time today to set bricks.

I got up to chain 4 without working on the Arch bricks. I will be taking the advice of Octoforno - GianniFocaccia and building the arch as I go.

The Ball bearing center allows me to have two or more ID tools going at once but at this stage I am just using 2 at a time.

This adaptation on the tool really works nice as I can set one brick and let it firm up while I work on the second brick. Once I am done wit the second the first is ready to go.

I was able to put on 3 complete chains today (minus the arch)

I did find that my oven floor was not perfectly round and I had to compensate chains 2 and 3 of brick to get the dome back into round.

Now that I am on my 4th chain I believe I have achieved a true circle. I will just grind down the rough edges later with a 4 inch grinder. I had some overlap on chains 2 and 3. but I want the FB mortar to achieve a better set before hitting the bricks with the diamond blade.

I used a single sheet of heavy weight plastic to cover my floor and mounted my ID tool ball bearing to the plastic with small bolts - that way I can remove the ball for cleaning should it be needed. The plastic was cut most of the way thru at 2 locations and then all the way thru like a dashed line. That way I can take a razor knife to the partial cut sections when it is time to remove the protective sheet. I covered the open areas with tape to protect the slits.

That is it for today I will post photos of the 4th chain tomorrow as I covered the oven before taking photos of todays progress.

Chip

[mrchipster]

Re: Chip's 42 in Minnesota

I finished my first chain today and cut the right side arch brick for the first two chains. Also cut and set my floor cover (Plastic sheet) and indispensable tool mount (see my postings on my tool - search for "variation on a FB theme")

I put a single layer of corrugated cardboard between the outside of my floor and the first chain of bricks to provide an expansion joint. As has been mentioned on other posts this will burn out and fill with ash after the first few fires.

Set 8 bricks on the second chain and found that I will be using quite a bit more FB mortar than expected. As others have said the FB mortar is a little grainy and it is difficult to get a small joint. I will be working to improve my brick setting skills. I may need to reduce my batch size to lower my wasted mortar as this stuff is expensive.

For the second chain I used 4.6 oz per brick and at that rate I will only be able to set about 180 bricks per sack of FB mortar.

I mixed 24 oz (Volume) this ends up being about 40 oz weight of FB mortar with 8.5 oz water and this seems to be about the right consistency. I mixed up a batch with 9 oz water and it was to runny. I only set 8 second layer bricks with the 24 oz batch but I could have set another 2-3 bricks if I was faster and the remaining mortar did not set on me. I am not retempering (adding water) to stretch the batch at this point, I am trying to get the hang of setting the bricks more quickly.

No photos today because I ran out of light and my camera battery needs a recharge.

Rained here again and that allowed me to work on my multi head Indispensable tool, I think it will come in very handy when I want to set a couple of bricks at a time.

Chip