Your source for affordable Mirror Kits and Telescope making Supplies
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Mirror Making Supplies
Money Lender, Mirror Blanks, air conditioning, MicroGrit WCA, Cerex 1670 Polishing Compound, Premium Zirconium Oxide Polishing Slurry, canadian hosting, Ceramic Tiles, HydroStone
Spherometers, Ronchi Testers, led light bar
Telescope Making Parts and Kits
Complete Telescope Kits, Dobsonian Side Bearings
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prefer international shipping by USPS.
From experience, our prefered shipping method is US Postal Service for packages under one pound, and UPS ground for all other packages.ï¿½ Contact us for additional shipping information, shipping costs, where car wash near me to send payment if you are paying by Money Order or Cashier Check, or have any other questions about mirror making or telescope making in general, and we are happy to reply, usually,ï¿½within one business day.
The price for the unassembled and unpainted complet kit:
Please contact us for additional information about our Complete Telescope Kits and options.Also Available in 6" F8 ($400) and 8" F6 ($500) kits that include Complete Mirror Kits and diamond curve generation as shown below for a scope you make yourself including the primary mirror.
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3/4" and 1" ThickMirror
Please see our Store Front for all Mirror Blank pricing.
Please see our Store Front for all Diamond
I can diamond generate a starting curve onto your mirror
blank.ï¿½ This can save you hours of rough grinding.ï¿½ Please
specify a desired curve betweenï¿½ F4.0 and F12.0, or longer.ï¿½ I
will get the curve as close as possible, quite often I can get
the curve right on, but willï¿½be no more than F0.5 off of your
desired curve.ï¿½ I use the total Sagita to calculate the generated
curve, and try to stop the generation process a few thousandths
of an inch short of your target to maintain the thickest possible
mirror blank.ï¿½If Generation is not ordered, your mirror blank
will arrive flat, you may want to order extra 80 grit for hogging
NOW AVAILABLE - Prices range between $75 and $200 depending on the indicator used, and includes a zeroing flat, very soon it will include a spiral bound instruction manual and measurement chart.ï¿½
A spherometer is used to test the surface of the mirror during grinding and measure the radius of curvature.ï¿½ See my for more information.
If you already have a good .0001" or .001mm dial indicator
like the one pictured to the left, I can make a custom
spherometer base to mount your indicator to.
Custom Model with 100 lpi grid - $60.00
The custom ronchi tester is built specifically to your digital, film, or video camera.ï¿½ Your camera mounts to the tester where it can take a picture of the mirror being tested.ï¿½ The tester then mounts to a camera tripod for positioning.ï¿½ This tester works best with digital, video, or SLR cameras as you need to be able to view what the camera can see to position the tester properly.
The measurements needed to build this kind of ronchi tester
are as follows:
Ronchi Tester for
Basic Modelï¿½with 100 lpi grid - $40.00
The basic model is similar to the tester above, but is not custom fitted to your camera specifications.ï¿½ This tester mounts to a camera tripod for positioning and has a 1" diameter viewing portal to view the mirror being tested.
80 grit - $3.38 Per Pound
80 grit Silicon Carbide is used for rough grinding a starting curve into the glass blank.ï¿½ If you are working with a diamond generated mirror blank, you use 80 grit to smooth out the surface and quickly match the surfaces between the mirror blank and tile tool.
120 and 220 grit Silicon Carbide are the second and third grits used for rough grinding. Use these grits to bring your mirror to a smoother and more consistant surface, and prepare it for the micron abrasives.
I transfer these Silicon Carbide grits to a shaker top container and then sprinkle the abrasive onto a wet mirror blank.ï¿½ Typically I use less thanï¿½1 ounce of each grit on an 8" mirror blank, and less than 4 ounces of these grits on a diamond generated 16" mirror blank.
30 Micron - $.38 Per Ounce
This precision optical compound is used to smooth the surface of the mirror prior to polishing.ï¿½ MicroGrit WCA has a talc mixed in the compound and is designed to be suspended in water.ï¿½ Mix 1 tablespoon of compound in 10 ounces of water.ï¿½ 2 ounces of compound is enough to mix with 40 ounces of water, and is enough to do 10 mirrors or more.ï¿½ I typicaly only use about 2 - 3 ounces of this mixture to smooth one 8" mirror.
Cerex 1670 polishing compound - $1.40 Per Ounce
This polishing compound quickly polishes out the mirror.ï¿½ When mixed 1 tablespoon in 10 ounces of water, a good pitch tool, and proper techniques, an 8" mirror can be Ronchi testedï¿½with only 1 hour of polishing, and can be polished out and figured in 4 or 5 hours.ï¿½ When mixed 2 tablespoons in 10 ounces of water, polishing goes much slower, reducing the chance of causing surface ripple, and works well while figuring.ï¿½ 2 ounces of Cerex 1670 should be enough to polish out two or three 8" mirrors, although technique and individual results vary, some may run out of 2 ounces of polishing compound on an 8" mirror.
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Premium Zirconium Oxide Polishing Slurry
2 ounceï¿½containerï¿½- $5.50
This Premium Zirconium Oxide Polishing Slurry contains a very fine polishing compound suspended in a water based slurry.ï¿½ This compound is very thick and can be thinned out to make around 10 ounces of liquid polishing compound.
This polishing slurry is used during final figuring to provide a very nice smooth ripple free surface, and to slowly approach that perfect figure.ï¿½ It is recommended to use the Cerium Oxide for polishing out the mirror and initial figuring, then use this slurry for final figuring only as this slurry polishes very slowly.
Gugolz 64 Polishing Pitchï¿½- $1.33 Per Ounce
Polishing pitch is used to create a pitch polishing tool.ï¿½ I typically use 8 ounces of pitch onï¿½an 8" tool, but have included an extra 2 ounces to account for the pitch coating the inside of the can when remelting and pouring the pitch onto the HydroStone backer plate.ï¿½ 10 ounces of pitch will create a nice thick polishing tool.ï¿½ I have one pitch tool made with 8 ounces of pitch that has successfully polished out and / or figured 5 different mirrors with focal lengths between F4 and F8.ï¿½ I simply warm the pitch tool in a sink of hot water, then regroove and repress the tool to the curve of the next mirror.
Note - Container shown in picture is ~35 ounces of pitch.ï¿½
HydroStone - $2.00 Per pound
HydroStone is used when creating the tile tool and backer plate for the pitch polishing tool.ï¿½ Mix one part water with three parts HydroStone powder, adding the powder to the water untill the proper consistency is achieved.ï¿½ 3 pounds of HydroStone mixed into 10 - 12 ounces of water is enough to make one tile tool, or backer plate with some powder left over.ï¿½ The finished tool will be about 1" thick depending on how you mix the compound.
square ceramic tiles
16 tiles for a 4" tool - $1.00
Ceramic tiles are used along with HydroStone to make a tile grinding tool.ï¿½ By using the mirror as a form when making the tool, the tile tool can be built matching the curve of the mirror reducing the amount of time needed to match the curve between the mirror and tile tool.
2" wide Paper Tape
$.50 Per 20 foot roll.
This paper tape is used to wrap around the edges of the mirror used as a mold when pouring HydroStone to make a tile tool, backer plate, or pouring melted pitch to make a pitch tool.ï¿½ A small roll includes enough paper tape for use when making 5 or 6 tools, possibly even more.
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3.5" wide Durable Plastic Banding
$.50 Per Foot
This Banding is used to wrap around the edges of the mirror as a mold when pouring HydroStone to make a tile tool, backer plate, or pouring melted pitch to make a pitch tool.ï¿½ We usually sell these as 3 foot peices for mirrors smaller than 12", or 6 foot peices for mirrors larger than 12", but you may buy this by the foot up to 6 feet.
Assembled - $65.00 (Custom made to order)
These bearings are the same as the ones used on my 12.5" F8
scope as seen in the image to the left. They are designed to
allow the telescope to pivot 180* in elevation going horizon to
horizon. Construction is two layers of Baltic Birch plywood. The
back layer is a solid disk for stiffness, while the front layer
has a stylish spoke design.
The unassembled bearings include all four plywood disks with their edges rounded over with a 1/8" bit, ready for you to finish, assemble, and glue your laminate onto. This option makes it easier to paint the back disk black like those in the picture on the left.
12" diameter - $50 (Custom made to order)
The mirror grinding turntable is similar to the one used on my grinding bench.ï¿½ The turntable will work with mirrorsï¿½up to 2" smaller than the size ordered.ï¿½ I.E.ï¿½ the 12" diameter turntable will work with a mirror up to 10" diameter, while the 26" turntable will work with mirrors up to 24" diameter.
The turntable isï¿½constructed out of two layers of baltic birch plywood laminated together (The 26" diameter has three layers).ï¿½ All face surfaces are covered with countertop laminate and edges are covered with melamine edge banding.
Theï¿½base isï¿½slightly smaller than the turntable to allow room for your fingers whileï¿½rotating the turntable.ï¿½ The base is also made from two layers of baltic birch plywood laminated together for stiffness, and is covered with laminate, and edge banding just like the turntable.
The turntable comes ready to mount to your favorate workbench, table, saw horse, or barrel.ï¿½ The turntable also works great if youï¿½set it onto some good non-slipï¿½drawer liner on your kitchen counter orï¿½table top, andï¿½should stay put with all but the most aggresive polishing action on a larger mirror.